Work Done When Force Is Varying
Trending Questions
Q. A locomotive of mass m starts moving so that its velocity varies according to the law v = a√s, where a is a constant, and s is the distance covered. Find the total work performed by all the forces which are acting on the locomotive during the first t seconds after the beginning of motion.
- ma4t2/8
- ma3t2/4
- ma4t2/4
- ma3t2/8
Q. A body of mass 6kg is under a force which causes displacement in it given by S=t24 metres where t is time. The work done by the force in 2 seconds is
- 6 J
- 12 J
- 3 J
- 9 J
Q.
The displacement x of a particle moving in one dimension under the action of a constant force is related to the time t by the equation, t = √x + 3 where x is in meters and t is in seconds. The work done by the force in the first 6 seconds is
9 J
6 J
0 J
3 J
Q.
A body of mass 3 kg is under a force, which causes a displacement in it is given by S=t33 (in m). Find the work done by the force in first 2 seconds
3.8 J
5.2 J
24 J
2 J
Q.
A particle moves under the effect of a force F = Cx from x = 0 to x=x1 . The work done in the process is
Zero