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प्रश्न
What is the work done by the moon when it revolves around the earth?
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उत्तर
Work done = Force × Displacement
संबंधित प्रश्न
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.
State the S.I. unit of work and define it.
How is work related to energy?
In case of negative work, the angle between the force and displacement is :
Can work done be zero even if force acts on the body?
A block of mass 20 kg is pulled up a slope (fig.12) with a constant speed by applying a force of 500 N parallel to the slope. A and B are initial and final positions of the block.
(a) Calculate the work done by the force in moving the block from A and B.
(b) Calculate the potential energy gained by the block.
A body of mass 60 kg has the momentum 3000 kgm/s-1. Calculate: the speed of the body.
Can two agents, doing the same work, have different power?
