The displacement of a body of mass 2 kg varies with time t as s = t2 + 2t, where s is in…
Physics · JEE Main · NTA Exams — Work, Energy and Power
The displacement of a body of mass 2 kg varies with time t as s = t2 + 2t, where s is in meters and t is in seconds. The work done by all the forces acting on the body during the time interval t = 2s to t = 4s is
- 36 J
- 64 J
- 100 J
- 120 J
Answer
(B) 64 J
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A ball is dropped from a height h on a floor of coefficient of restitution e. The total distance covered by…
- The KE of a 500 gram stone is 100 J. Against a force of 50 N, how long will it travel?
- A man has a box of weight 10 kg. The energy of the box, when the man runs with a constant velocity of 2 m/sec…
- The work done by a particle moving with a velocity of 0.7 c (where c is the velocity of light) in empty space…
- A body of mass 8 kg is moved by a force F=3 x newton, where x is the distance covered. Initial position is x…
- A 400 g ball is released from a height of 4 m. Each time it makes contact with the ground it loses 25% of its…
- A uniform chain of length L and mass M is lying on a smooth table and one third of its length is hanging…
- Given below are two statements. STATEMENT - 1: A force is conservative, if the work done on a particle that…
More Work, Energy and Power questions · Browse all practice questions