Advertisements
Advertisements
प्रश्न
उत्तर
Examples of potential energy:
(i) Water stored at a height in a reservoir.
(ii) A stretched spring.
APPEARS IN
संबंधित प्रश्न
Work is said to be done by a forte only when ................
No work is done by a force if the body
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The loss in potential energy of the body,
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
How much work is done when a force of 1 N moves a body through a distance of 1 m in its own direction?
A uniform circular motion is an accelerated motion. Justify it.
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
Fill in the boxe to show the corresponding energy transformation.
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
State the amount of work done by an object when it moves in a circular path for one complete rotation. Give a reason to justify your answer.
A is a push or a pull ______.
Force acting on a particle moving in a straight line varies with the velocity of the particle v as F = `K/v`, where K is a constant. The work done by this force in time t is
