Question

A body of mass 10kg is raised from certain depth by the time it is raised by 10m if its velocity is 2ms work done during this time is?

Answer 1

Answer:

1

A body of mass 10kg is lifted to a height 5m from the ground. How would one find the work done?

Munish Fauzdar

Answered October 10

Work done is change in potential energy of the object. Here the assumption is that the force which lifts the body, balances the weight at all times, meaning which there is no linear velocity of the object during this motion.

All the work done by the force is reflected as the increase in the stored potential energy of the object. Potential energy is defined as a difference of potential energy between two reference points and

U2 - U1 = mgh = 10 * 10 * 5 = 500 N-m

So the work done =Change in potential energy= 500 Nm.