Laws of Motion — practice questions

266 curated practice questions from Laws of Motion (Physics NEET, NTA Exams) — 158 easy, 86 medium, 22 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.

• Mass of a person sitting in a lift is 50 kg. If lift is coming down with a constant acceleration of 10 m/sec 2 . Then…
• Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
• Two objects having the same mass m, are tied at the ends of a light string of length 2a. The whole system is kept on a…
• An insect crawls up a hemispherical surface very slowly (see the figure). The coefficient of friction between the…
• A brick of mass 2 kg begins to slide down on a plane inclined at an angle of 45 o with the horizontal. The force of…
• A coin of mass 10 g is placed over a book of length 50 cm . The coin is on the verge of sliding when one end of the…
• Two blocks, 4 kg and 2 kg are sliding down an incline plane as shown in figure. The acceleration of 2 kg block is
• A block weighing W is held against a vertical wall by applying a horizontal force F . The minimum value of F needed to…
• A circular disc with a groove along its diameter is placed horizontally. A block of mass 1 kg is placed as shown. The…
• A 70 kg man is riding on a 32 kg cart travelling at a velocity of 3.2 m/s (with respect to ground). He jumps off with…
• A block of mass 10 kg is placed on an inclined plane. When the angle of inclination is 30 o , the block just begins to…
• A gramophone record is revolving with an angular velocity A coin is placed at a distance from the centre of the record…
• An ice cube is kept on an inclined plane of angle 30°. Coefficient of kinetic friction between block and incline plane…
• Assertion : The acceleration of a body down a rough inclined plane is greater than the acceleration due to gravity…
• A uniform metal chain is placed on a rough table such that one end of chain hangs down over the edge of the table. When…
• A bomb of mass 16 kg at rest explodes into two pieces of masses 4 kg and 12 kg. The velocity of the 12 kg mass is 4 ms…
• A particle moving with velocity is acted by three forces shown by the vector triangle PQR . The velocity of the…
• Why does a man getting down from a running bus fall forward?
• Block B lying on a table weighs W . The coefficient of static friction between the block and the table is . Assume that…
• If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction between it and floor…
• A block kept on a rough inclined plane, as shown in the figure, remains at rest upto a maximum force 2 N down the…
• In the figure given, the system is in equilibrium. What is the maximum value that W can have if the friction force on…
• When we hold a book in our hand, we are balancing the gravitational force on the book due to
• Two springs of spring constants k 1 and k 2 are joined in series. The effective spring constant of the combination is…
• A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4 . If a force F of 2.5 Newtons is…
• Consider a block kept on an inclined plane (inclined at 45 º ) as shown in the figure. If the force required to just…
• The force F acting on a particle of mass m is indicated by the force–time graph shown below. The change in momentum of…
• A car is moving along a straight horizontal road with a speed . If the coefficient of friction between the tyres and…
• A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the…
• A block A of mass m 1 rests on a horizontal table. A light string connected to it passes over a frictionless pulley at…
• A cylinder weighing 400 lb is held against a smooth incline by means of the weightless rod AB in Figure. Determine the…
• A boy presses a book against the front wall such that the book does not move. The force of friction between the wall…
• A body is sliding down an inclined plane having coefficient of friction 0.5 . If the normal reaction is twice that of…
• A block is kept on an inclined plane of inclination  of length l . The velocity of particle at the bottom of inclined…
• A body moves along a circular path of radius 10 m and the coefficient of friction is 0.5 . What should be its angular…
• Two carts of masses 200 kg and 300 kg on horizontal rails are pushed apart. Suppose the coefficient of friction between…
• A boy of mass 40 kg is climbing a vertical pole at a constant speed. If the co–efficient of friction between his palms…
• Assertion : The acceleration of a body down a rough inclined plane is greater than the acceleration due to gravity…
• A small box resting on one edge of the table is struck in such a way that it slides off the other edge, 1 m away, after…
• Under the action of a given Coulombic force the acceleration of an electron is 2.5 x 10 22 m/s 2 . Then the magnitude…
• A block rests on a rough inclined plane making an angle of with the horizontal. The coefficient of static friction…
• Assertion : When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in…
• A bag is gently dropped on a conveyor belt moving at a speed of The coefficient of friction between the conveyor belt…
• One end of string of length l is connected to a particle of mass 'm' and the other end is connected to a small peg on a…
• A body of mass 2 kg travels according to the law x(t) = pt + qt 2 + rt 3 where p = 3 ms –1 , q = 4 ms –1 and r = 5 ms…
• A hockey player is moving northward and suddenly turns westward with the same speed to avoid an opponent. The force…
• A man pulls a block heavier than himself with a light rope. The coefficient of friction is the same between the man and…
• A block of mass 200 kg is being pulled up by men on an inclined plane at angle of 45° as shown. The coefficient of…
• A heavy uniform chain lies on a horizontal table-top. If the coefficient of friction between the chain and table…
• A body of mass is moving with an initial speed of The body stops after due to friction between body and the floor. The…
• A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is suspended from it…
• A mass m rests on another mass M . The co-efficient of static friction between B the surfaces of m and M is . M rests…
• A bullet of mass 10 g is fired from a gun of mass 1 kg. If the recoil velocity is 5 m/s, the velocity of the muzzle is:
• A block of base 10 ~cm 10 ~cm and height 15 cm is kept on an inclined plane. The coefficient of friction between them…
• The mass of a lift is 2,000 kg. If the tension in the supporting cable is 28,000 N, then its acceleration is
• A block of mass is in contact with the cart as shown in the figure. The coefficient of static friction between the…
• A conveyor belt is moving horizontally with a speed of 4 m/s. A box having a mass of 20 kg is gently laid on the belt…
• Which of the following is not in accordance with the third law of motion?
• A given object takes n times as much time to slide down a 45° rough incline as it takes to slide down a perfectly…
• Given in the figure are two blocks A and B of weight 20 N and 100 N , respectively. These are being pressed against a…
• A box of mass is placed on the roof of a car. The box would remain stationary until the car attains a maximum…
• Assertion : External force is necessary to keep a body in motion. Reason: If the net external force is zero, a body at…
• On the horizontal surface of a truck (  = 0.6), a block of mass 1 kg is placed. If the truck is accelerating at the…
• Given below are two statements. Statement I : Static friction is self-adjusting force . Statement II : Friction does…
• Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The…
• A pendulum bob of mass 50 g is suspended from the ceiling of an elevator. The tension in the string if the elevator…
• A block of mass m is placed on a surface with a vertical cross section given by y = x 3 /6. If the co–efficient of…
• Consider a car moving along a straight horizontal road with a speed of 72 km / h . If the coefficient of kinetic…
• A block of mass is placed at rest on a table of rough surface. Now, if a force of is applied in the direction parallel…
• A rough vertical board has an acceleration ‘ a ’ so that a 2 kg block pressing against it does not fall. The…
• If rope of lift breaks suddenly, the tension exerted by the surface of lift (a = acceleration of lift)
• A parachutist of weight ‘w’ strikes the ground with his legs fixed and comes to rest with an upward acceleration of…
• A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity. The impulse…
• A block of mass m is in contact with ‘α’ with the cart C as shown in the figure. The co–efficient of static friction…
• When two surfaces are coated with a lubricant, then they [AFMC 1998, 99; AIIMS 2001]
• A body of mass 2 kg is hung on a spring balance mounted vertically in a lift. If the lift descends with an acceleration…
• A rocket is ejecting 50 g of gases per sec at a speed of 500 m/s. The accelerating force on the rocket will be
• A uniform metal chain is placed on a rough table such that one end of chain hangs down over the edge of the table. When…
• There are two inclined surfaces of equal length and same angle of inclination with the horizontal. One of them is rough…
• Which activity is not based upon friction [MP PMT 2009, 10]
• Two masses A and B of 10 kg and 5 kg respectively are connected with a string passing over a frictionless pulley fixed…
• An object of mass 3 kg is at rest. If a force F = (6 t^ 2 i +4 t j ) N is applied on the object, then the velocity of…
• A shell of mass 10 kg is moving with a velocity of 10 m/s when it blasts and forms two parts of mass 9 kg and 1 kg…
• A body, under the action of a force F =6 i -8 j +10 k acquires an acceleration of 1 m/s 2 . What should be the mass of…
• A block P of mass m is placed on a frictionless horizontal surface. Another block Q of same mass is kept on P and…
• A 2 kg mass starts from rest on an inclined smooth surface with inclination 30 o and length 2 m . How much will it…
• If sand is being dropped on a conveyor belt at the rate of M kg/s then the force necessary to keep that conveyor belt…
• Assertion : There is no noticeable variation in the position of the body during the action of the impulsive force…
• A block of mass slides along a floor while a force of magnitude is applied to it at an angle as shown in figure. The…
• Given below are two statements: Statement I : Satellite DNA form is inheritable so can be used in paternity testing…
• A body of mass 10 kg slides along a rough horizontal surface. The coefficient of friction is . Taking g=10 ~m / s ^ 2 …
• A student unable to answer a question on Newton's laws of motion attempts to pull himself up by tugging on his hair. He…
• An automobile that is towing a trailer is accelerated on a horizontal road. The force (F) that the automobile exerts on…
• Assertion : Friction is a self adjusting force. Reason : Friction does not depend upon mass of the body.
• An iron block of mass 5 kg is kept on a trolley. If the trolley is being pushed with an acceleration of 5 What will be…
• On the horizontal surface of a truck (  = 0.6), a block of mass 1 kg is placed. If the truck is accelerating at the…
• A solid cylinder of mass is wrapped with an inextensible light string and, is placed on a rough inclined plane as shown…
• Select the incorrect statement(s) about static friction I. Static friction exists on its own. II. In the absence of…
• A block B is pushed momentarily along a horizontal surface with an initial velocity V . If  is the coefficient of…
• A car of mass m is moving on a level circular track of radius R. If µ s represents the static friction between the road…
• A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N…
• A mass rests on another mass The co-efficient of static friction between the surfaces of and is rests on smooth…
• Block lying on a table weighs The coefficient of static friction between the block and the table is Assume that the…
• Assertion : Frictional force opposes relative motion and dissipates power in the form of heat. Reason: Friction is…
• A block A of mass rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the…
• Assertion : Static friction is a force which can be self–adjusted up to its limit µ s N where µ s is the co–efficient…
• Which one of the following is not used to reduce friction
• A block of mass 5 kg is (i) pushed in case ( A ) and (ii) pulled in case ( B ), by a force F =20 N , making an angle of…
• Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The…
• A coin is dropped in a lift. It takes time t 1 to reach the floor when lift is stationary. It takes time t 2 when lift…
• The upper half of an inclined plane of inclination θ is perfectly smooth while lower half is rough. A block starting…
• A box of mass is placed on the roof of a car. The box would remain stationary until the car attains a maximum…
• The velocity of a small box of mass m and density d 1 when dropped in a container filled with glycerin becomes constant…
• A block of mass 1 kg lies on a horizontal surface in a truck, the co–efficient of static friction between the block and…
• A boy of mass 40 kg is climbing a vertical pole at a constant speed. If the coefficient of friction between his palms…
• Determine the magnitude of P and F necessary to keep the concurrent force system in Figure in equilibrium.
• A car is moving on a horizontal curved road with radius The approximate maximum speed of car will be, if friction…
• A gramophone record is revolving with an angular velocity A coin is placed at a distance from the centre of the record…
• Which of the following sets of concurrent forces may be in equilibrium?
• A body moves along a circular path of radius 10 m and the coefficient of friction is 0.5 What should be its angular…
• A fireman of mass 60 kg slides down a pole. He is pressing the pole with a force of 600 N . The coefficient of friction…
• Starting from rest, a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance…
• A rigid ball of mass m strikes a rigid wall at 60° and gets reflected without loss of speed as shown in the figure. The…
• A body of mass 2 kg is moving on the ground comes to rest after some time. The coefficient of kinetic friction between…
• A block of mass M =5 kg is resting on a rough horizontal surface for which the coefficient of friction is 0.2 When a…
• Three concurrent forces of the same magnitude are in equilibrium. What is the angle between the forces ? Also name the…
• Assertion: For the application of the second law of motion, there is no conceptual distinction between inanimate and…
• Three blocks with masses m, 2 m, and 3 m are connected by strings, as shown in the figure. After an upward force F is…
• A shell is fired from a cannon with a velocity v (m/s) at an angle θ with the horizontal direction. At the highest…
• A system consists of three masses m 1 , m 2 , and m 3 connected by a string passing over a pulley P. The mass m 1 hangs…
• Two iron blocks of equal mass but with double surface area slide down an inclined plane with friction coefficient If…
• The maximum speed of a car on a road turn of radius 30 m ; if the coefficient of friction between the tyres and the…
• Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
• A body of mass 10 kg is lying on a rough plane inclined at an angle of 30 o to the horizontal and the coefficient of…
• When forces F 1 , F 2 , F 3 are acting on a particle of mass m such that F 2 and F 3 are mutually perpendicular, then…
• A body of mass 4 kg weighs 4.8 kg when suspended in a moving lift. The acceleration of the lift is
• A system consists of three masses m 1 , m 2 and m 3 connected by a string passing over a pulley P . The mass m 1 hangs…
• A car is moving along a straight horizontal road with a speed . If the coefficient of friction between the tyres and…
• An inclined plane of length 5.60 m making an angle of 45º with the horizontal is placed in an uniform electric field…
• A force of 10 N acts on a body of mass 1 kg for 10 s. The impulse of the force on the body is
• A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is If the…
• A horizontal force of 10 N is necessary to just hold a block stationary against a wall. The co–efficient of friction…
• A child weighing 25 kg slides down a rope hanging from the branch of a tall tree. If the force of friction acting…
• For a system to follow the law of conservation of linear momentum during a collision, the condition is: total external…
• A car of mass m starts from rest and acquires a velocity along east v = v i (v > 0) in two seconds. Assuming the car…
• A block of mass 2 kg rests on a rough inclined plane making an angle of 30° with the horizontal. The coefficient of…
• It is easier to roll a barrel than pull it along the road. This statement is [BVP 2003; IIT-JEE 2008]
• Two ice–skaters M and N approach each other at right angles. Skater M has a mass 30 kg and velocity 1 m/s and skater N…
• Calculate the maximum value of the force, F such that the block shown in the arrangement, does not move?
• Assertion: If the magnitude of net external force on a body is zero, its acceleration will be zero. Reason: The given…
• A 300 lb box is held at rest on a smooth plane by a force P inclined at an angle θ with the plane as shown in Figure…
• If the value of P in Figure is 180 lb, determine the angle θ at which it must be inclined with the smooth plane to hold…
• Which one of the following statements is incorrect [NEET 2018]
• An object placed on an inclined plane starts sliding when the angle of incline becomes 30º. The coefficient of static…
• A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4 If a force F of 2.5 Newtons is…
• If a body is in equilibrium under a set of non-collinear forces, then the minimum number of forces has to be [AIIMS…
• An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other…
• Assertion : Angle of repose is equal to angle of limiting friction. Reason : When the body is just at the point of…
• The recoil velocity of a 4.0 kg rifle that shoots a 0.050 kg bullet at a speed of 280 ms -1 is
• A block B is pushed momentarily along a horizontal surface with an initial velocity V . If  is the coefficient of…
• Newton’s second and third laws of motion lead to the conservation of _____
• A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle of radius 1 m. The centrifugal force…
• A block of mass 2 kg rests on a horizontal surface. If a horizontal force of 5 N is applied on the block the frictional…
• A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the…
• Consider the system shown below a horizontal force is applied to a block of mass 8 kg such that the block of mass 2 kg…
• A block of mass m is laying on an inclined plane of angle θ . If the friction co–efficient between the block and the…
• A car is negotiating a curved road of radius R. The road is banked at an angle θ . The co–efficient of friction between…
• A block of mass m is placed on a surface with a vertical cross section given by y= x^ 3 6 . If the coefficient of…
• A force of 750 N is required to push a car of mass 1000 kg slowly at a constant speed of 20 km/hr on a level road. If a…
• A block of mass 10 kg is placed on a rough horizontal surface having coefficient of friction  = 0.5 If a horizontal…
• Given below are two statements. Statement I : Limiting friction is always greater than the kinetic friction. Statement…
• A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it…
• A body of weight 50 N placed on a horizontal surface is just moved by a force of 28.2 N . The frictional force and the…
• The time taken by an object to slide down rough inclined plane is n times as it takes to slide down a perfectly smooth…
• Which figure shows the correct force acting on the body sliding down an inclined plane? mass, force of friction)
• N balls each of mass m, impinge elastically every second on a floor with velocity v . Then, the floor will experience a…
• Assertion : It is difficult to drive a car at high speed on a rainy day. Reason: The value of co–efficient of friction…
• A particle of mass 0.3 kg is subjected to a force F = −kx with k = 15 N/m. What will be its initial acceleration if it…
• There is an object, which slides down from rest along a smooth inclined plane making an angle of 45° with the…
• A car of mass 1,000 kg moves on a circular track of radius 20 m. If the co–efficient of friction is 0.64, then the…
• An aeroplane takes a horizontal loop with its wings banked at an angle of 11 1 2 . The radius of the loop is 20 km…
• Assertion : On a roundabout, every portion of our body is subjected to an inward force. Reason: Our body feels a push…
• Assertion : On a rainy day, it is difficult to drive a car or bus at high speed. Reason : The value of coefficient of…
• Given below are two statements: Statement I : Satellite DNA is used in DNA profiling as it has high degree of…
• The upper half of an inclined plane of inclination  is perfectly smooth while the lower half is rough. A body starting…
• A mass M of 100 kg is suspended with the use of strings A, B, and C as shown in the figure, where W is the vertical…
• Select the incorrect statement(s) from the following I. Limiting friction is always greater than the kinetic friction…
• Conservation of momentum in a collision between particles can be understood from
• Assertion : Use of ball bearings between two moving parts of machine is a common practice. Reason : Ball bearings…
• A 150 g mass ball moving with an acceleration of 10 ~m / s ^ 2 is hit by a bat with a force which acts on it for 0.2 s…
• The coefficient of friction between a body and the surface of an inclined plane at 45° is 0.5 If g=9.8 ~m / s ^ 2 , the…
• Mohan is having mass of 50 kg. He is standing at one end on a boat of length 25 m and mass 200 kg. If he starts running…
• To avoid slipping while walking on ice, one should take smaller steps because of the
• A ball hits the floor and rebounds after an inelastic collision in this case
• A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the…
• A cylinder of mass 10 kg is sliding on a plane with an initial velocity of 10 m / s . If coefficient of friction…
• Which of the following statements is/are incorrect, when a person walks on a rough surface I. The frictional force…
• An inclined plane of length 5.60 m making an angle of with the horizontal is placed in an uniform electric field . A…
• A block of 1 kg is stopped against a wall by applying a force F perpendicular to the wall. If then minimum value of F…
• Assertion : When an object is released out of an accelerated train, there is no horizontal force or acceleration on the…
• A passenger in a moving bus is thrown forwards when the bus is suddenly stopped. This is explained by
• A boy of mass 40 kg is climbing a vertical pole at a constant speed. If the coefficient of friction between his palms…
• A block rests on a rough inclined plane making an angle of with the horizontal. The coefficient of static friction…
• Direction of frictional force between wheel of the car and road is
• In the figure given, the system is in equilibrium. What is the maximum value that W can have if the friction force on…
• Assertion : There exist no relation of cause–effect between action and reaction. Reason: Action and reaction forces are…
• When 1 N force acts on 1 kg body that can move freely, the body receives
• In the game of cricket, the fielder lower his hand while taking a catch due to the reason:
• A conveyor belt is moving at a constant speed of 2 m / s . A box is gently dropped on it. The coefficient of friction…
• A system consists of three masses and connected by a string passing over a pulley The mass hangs freely and and are on…
• A person, having mass of 60 kg is inside a lift of mass 940 kg and presses the button on control panel. If the lift…
• What is the maximum value of the force F such that the block shown in the arrangement, does not move [IIT-JEE…
• Two carts of masses 200 kg and 300 kg on horizontal rails are pushed apart. Suppose the coefficient of friction between…
• A pen of mass ‘ m ’ is lying on a piece of paper of mass M placed on a rough table. If the coefficient of friction…
• A block of 1 kg is stopped against a wall by applying a force F perpendicular to the wall. If then minimum value of F…
• A body of weight 64 N is pushed with just enough force to start it moving across a horizontal floor and the same force…
• In the above problem, the magnitude of the momentum transferred during the hit is
• A cricket ball of mass 250 g collides with a bat with velocity 10 m/s and returns with the same velocity within 0.01 s…
• Two blocks, 4 kg and 2 kg are sliding down an incline plane as shown in figure. The acceleration of 2 kg block is…
• A body of mass 2 kg is moving with a velocity 8 m/s on a smooth surface. If it is to be brought to rest in 4 s, then…
• A block of mass starts sliding on a surface with an initial velocity of . The coefficient of friction between the…
• A system consists of three masses m 1 , m 2 and m 3 connected by a string passing over a pulley The mass m 1 hangs…
• A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N . The coefficient of friction between…
• A vehicle of mass m is moving on a rough horizontal road with momentum P . If the coefficient of friction between the…
• An insect is at the bottom of a hemispherical ditch of radius 1 m . It crawls up the ditch but starts slipping after it…
• A car is moving along a straight horizontal road with a speed ν 0 . If the coefficient of friction between the tyres…
• A conveyor belt is moving at a constant speed of 2 ms −1 . A box is gently dropped on it. The co–efficient of friction…
• Mark the correct statement:
• A block of mass in contact against the inner wall of a hollow cylindrical drum of radius . The coefficient of friction…
• The maximum speed that can be achieved without skidding by a car on a circular unbanked road of radius R and…
• Assertion : If there is an isolated system of particle exists, then its total momentum is conserved. Reason: The law of…
• The upper half of an inclined plane of inclination  is perfectly smooth while the lower half is rough. A body starting…
• The coefficient of static friction, between block A of mass 2 kg and the table as shown in the figure is 0.2 . What…
• If a particle is moving with a constant speed along a straight path then a force is not required to _____
• Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary to keep the belt moving with a…
• The cable and boom shown in Figure support a load of 600 lb. Determine the tensile force T in the cable and the…
• Three forces, P = 10 N, Q = 10 N and R = unknown, are acting on an object which remains under equilibrium. Consider the…
• Assertion : There is an object which is momentarily at rest, it represents that force or acceleration are necessarily…
• A vehicle of mass m is moving on a rough horizontal road with momentum P . If the coefficient of friction between the…
• A lift is moving downwards with an acceleration equal to acceleration due to gravity. A body of mass m kept on the…
• Which of the following statement is NOT TRUE in respect of friction.
• A stationary particle explodes into two particles of masses m 1 and m 2 which move in opposite directions with…
• A given object takes n times as much time to slide down a 45° rough incline as it takes to slide down a perfectly…
• Assertion : The words ‘action’ and ‘reaction’ in the third law of motion stand for simultaneous mutual forces between a…
• A machine gun fires a bullet of mass 40 g with a velocity 1200 m s -1 . The man holding it can exert a maximum force of…
• Two blocks A and B, having masses of 3m and m respectively are connected by a massless and inextensible string. The…
• A block of mass 1 kg and charge q is tied to a spring of spring constant k. The electric field intensity E is switched…
• Force required to move a mass of 1 kg at rest on a horizontal rough plane is [WB-JEE 2008]
• To avoid slipping while walking on ice, one should take smaller steps because of the [BHU 1999; BCECE 2004]
• The backside of a truck is open and a box of 40 kg is placed 5 m away from the rear end. The coefficient of friction of…
• A block A of mass m i rests on a horizontal table. A light string connected to it passes over a friction less pulley at…
• The minimum velocity (in m/s) with which a car driver must traverse a flat curve of radius 150 m and coefficient of…
• Three concurrent co–planar forces 1 N, 2 N, and 3 N acting along different directions on a body
• A block of mass 50 kg is lying on a rough surface having coefficient of static friction 0.6 and that of dynamic…
• An iron block of mass 5 kg is kept on a trolley. If the trolley is being pushed with an acceleration of 5 What will be…
• A boy of 50 kg is in a lift moving down with an acceleration 9.8 ms –2 . The apparent weight of the body is (where, g =…
• Assertion : The value of dynamic friction is less than the limiting friction. Reason : Once the motion has started, the…
• A lift is moving downwards with an acceleration equal to acceleration due to gravity. A body of mass m kept on the…
• There are two inclined surface of equal length ( L ) and same angle of inclination with the horizontal. One of them is…
• A block is lying static on the floor. The maximum value of static frictional force on the block is . If a horizontal…
• A force of 10 N acts on a body of mass 20 kg for 10 s. Change in its momentum is
• A marble block of mass 2 kg lying on ice when given a velocity of 6 m/s is stopped by friction in 10 s . Then the…
• A child weighing 25 kg slides down a rope hanging from a branch of a tall tree. If the force of friction against him is…
• Two blocks A and B of masses and are kept on the table as shown in figure. The coefficient of friction between A and B…
• A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is If the…
• The coefficient of static friction, between block A of mass 2 kg and the table as shown in the figure is 0.2 What would…

← All Physics NEET chapters · All subjects