Gravitation — practice questions
84 curated practice questions from Gravitation (Physics JEE Main, NTA Exams) — 73 easy, 4 hard, 7 medium. Every question includes the final answer free; step-by-step worked solutions with a free account.
- Suppose the gravitational force varies inversely as the n th power of distance. Then the time period of a planet in…
- A satellite orbiting the circular orbit of radius R completes one revolution in 3 h. If orbital radius of geostationary…
- A seconds pendulum is mounted in a rocket. Its period of oscillation decreases when the rocket
- If the change in the value of g at a height h above the surface of the Earth is the same as at a depth x below its…
- The potential energy of a satellite, having mass m and rotating at a height of 6.4 x 10 6 m is [where R is the radius…
- The gravitational force between two objects is proportional to 1/R (and not as 1/R 2 ) where R is separation between…
- The acceleration due to gravity at a height 1 km above the earth is the same as at a depth d below the surface of…
- Given below are two statements. STATEMENT - 1: Two identical copper spheres having equal mass m are kept at a distance…
- What must be the angular velocity of rotation of the earth so that the effective acceleration due to gravity at the…
- The escape velocity of a body projected vertically upwards from the surface of the earth is v. If the body is projected…
- The time period of an Earth satellite in circular orbit is independent of
- If a man at the equator would weigh ( 3 5 ) th of his actual weight, the angular speed of the earth is
- A satellite is orbiting the earth in a circular orbit of radius r. Its period of revolution varies as
- A satellite revolves very near to the Earth surface. Its speed should be around:
- A body is released from a point distance r from the centre of the Earth. If R is the radius of the Earth and r > R…
- Two objects of masses m and 4m are at rest at infinite separation. They move towards each other under mutual…
- Assertion: The square of the period of revolution of a planet is proportional to the cube of its distance from the sun…
- A high jumper can jump 2.0 m on earth. With the same effort how high will he be able to jump on a planet whose density…
- An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy E 0 . Its…
- If the gravitational force between two bodies were proportional to 1/R (instead of 1/R 2 ) where R is the separation…
- For a satellite moving in an orbit around the Earth, the ratio of kinetic energy to potential energy is:
- The escape velocity from the earth is v e . What is the escape velocity from a planet whose mass and radius are twice…
- The radius vector, drawn from the sun to a planet, sweeps out equal areas in equal times. This is the statement of:
- The ratio of the escape velocity of an earth satellite to its orbital velocity is very nearly equal to
- A satellite is in a circular orbit of radius R. Its frequency of revolution around the Earth varies with the orbital…
- If suddenly the gravitational force of attraction between the Earth and a satellite revolving around it becomes zero…
- If the spinning speed of the earth is increased, then weight of the body at the equator:
- Two satellites A and B of masses m 1 and m 2 (m 1 = 2m 2 ) are moving in circular orbits of radii r 1 and r 2 (r 1 = 4r…
- Three particles, each of mass m, are placed at the vertices of an equilateral triangle of side a. The gravitational…
- The ratio of the radii of the planet P 1 and P 2 is k. the ratio of acceleration due to gravity on them is r. then the…
- A geostationary satellite is orbiting the earth at a height of 6R above the surface of the earth; R being the radius of…
- A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km. Then, the time period of…
- A mass m is placed in the cavity inside a hollow sphere of mass M as shown in the figure. What is the gravitational…
- A satellite of mass m is orbiting the earth (of radius R) at a height h from its surface. The total energy of the…
- Two satellites of masses 3M and M orbit the earth in circular orbits of radii r and 3r respectively. The ratio of their…
- The angular speed of earth in rad/s, so that the object on equator may appear weightless is: (radius of earth = 6400 km)
- An astronaut on a strange planet finds that acceleration due to gravity is twice as that on the surface of the Earth…
- Choose the wrong statement. The orbital velocity of a body in a stable orbit around a planet depends upon
- The radii of circular orbits of two satellites A and B of the Earth are 4R and R respectively. If the speed of…
- Assuming earth to be a sphere of uniform density. What is the value of acceleration due to gravity at a point 100 km…
- The variation in the speed of the planets in their orbit about the Sun can be explained on the basis of the…
- The masses and radii of the earth and moon are M 1 , R 1 and M 2 , R 2 respectively. Their centres are a distance d…
- A mass M is divided into two parts xM and (1-x)M For a given separation, the value of x for which the gravitational…
- Mass of moon is 1/81 times that of earth and its radius is 1/4 of the earth radius. If the escape velocity on the…
- Radius of orbit of a satellite of the Earth is R. Its kinetic energy is proportional to
- A satellite of mass m is in a stable circular orbit around the earth at an altitude of about 100 kilometres. If M is…
- A satellite is moving around the earth in a stable circular orbit. Which one of the following statements will be wrong…
- Two planets of radii R 1 and R 2 are made from the same material. The ratio of the accelerations due to gravity g 1 /g…
- The kinetic energy of a satellite in its orbit around the Earth is E. Its kinetic energy, so as to enable it to escape…
- A body is released from a height equal to the radius (R) of the earth. The velocity of the body when it strikes the…
- A rocket is fired from the earth to the moon. The distance between the earth and the moon is r and the mass of the…
- An earth satellite is kept moving in orbit by the centripetal force provided by
- Assertion: A tennis ball bounces higher on hills than in plains. Reason: Acceleration due to gravity on the hill is…
- A body is projected up with a velocity equal to 3 4 t h of the escape velocity from the surface of the earth. The…
- Two particles of equal mass m go round a circle R under the action of their mutual gravitational attraction. The speed…
- If both the mass and the radius of the earth decrease by 1%, the value of the acceleration due to gravity will
- An object weights W newton on earth. It is suspended from the lower end of a spring balance whose upper end is fixed to…
- Radius of orbit of satellite of earth is R. Its Kinetic energy is proportional to:
- Two satellites A and B are orbiting around the earth in circular orbits of the same radius. The mass of A is 16 times…
- A planet revolves around the sun in an elliptical orbit. The linear speed of the planet will be maximum at
- An instrument package is released from an orbiting earth satellite by simply detaching it from the outer wall of the…
- The speed of earth’s rotation about its axis is ω. Its speed is increased to x times to make the effective acceleration…
- An artificial satellite is moving around the surface of the Earth. If the magnitude of G (universal gravitational…
- A rocket is launched vertically from the surface of the earth of radius R with an initial speed v. If atmospheric…
- Assertion: The comet does not obey Kepler’s law of planetary motion. Reason: The comet does not have elliptical orbit.
- A ball is dropped from a satellite revolving around the earth at a height of 120 km. The ball will:
- A body of mass m placed on earth surface is taken to a height of h = 3R, then change in gravitation potential energy is
- Assuming that the earth is a sphere of radius R, at what altitude will the value of the acceleration due to gravity be…
- A body of mass m is raised to a height h above the surface of the earth of mass M and radius R until its gravitational…
- Suppose the gravitational force varies inversely as the nth power of the distance. The time period of a planet in…
- Given below are two statements. STATEMENT - 1: If the distance between the Earth and the Sun were half its present…
- A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into an…
- The orbital angular momentum of a satellite revolving at a distance r from the center is L. If the distance is…
- Astronauts in a stable orbit around the earth are said to be in a weightless condition. The reason for this is that
- Two satellites of the same mass are orbiting round the earth at heights of R and 4R above the earth’s surface: R being…
- Which of the following statements are true about Newton's law of gravitation: It does not follow inverse square law. It…
- The distance of a geostationary satellite from the centre of earth (radius R = 6400 km) is nearest to:
- Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
- Infinite number of masses, each of mass m, are placed along a straight line at distances of r, 2r, 4r, 8r, etc. from a…
- The acceleration due to gravity on earth of radius Re is ge and that on moon of radius Rm is gm. The ratio of the…
- What will be the formula of the mass in terms of g, R and G? (R = radius of earth)
- The acceleration due to gravity g on earth is 9.8 ms -2 . What would be the value of g for a planet whose size is the…
- The height of the point vertically above the earth’s surface at which the acceleration due to gravity becomes 1% of its…
- The figure shows elliptical orbit of a planet m about the sun S. The shared area SCD is twice the shaded area SAB. If t…