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प्रश्न
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उत्तर
Examples of potential energy:
(i) Water stored at a height in a reservoir.
(ii) A stretched spring.
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संबंधित प्रश्न
When do we say that work is done?
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher.
A box of weight 150 kgf has gravitational potential energy stored in it equal to 14700 J. Find the height of the box above the ground. (Take g = 9.8 N kg-1)
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
What do you mean by a kilo joule?
What is the ratio of SI units to CGS units of 'work'?
