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प्रश्न
Gravitational potential energy U = mass × force of gravity on unit mass × ..........
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उत्तर
Gravitational potential energy U = mass × force of gravity on unit mass × height.
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संबंधित प्रश्न
The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?
A body of mass m is moved from ground to a height h. If force of gravity on mass of 1 kg is g newton, find the work done in lifting the body.
What happens to the potential energy of a body when its height is doubled?
A weightlifter is lifting weights of mass 200 kg up to a height of 2 metres. If g = 9.8 m s−2, calculate :
work done by the weightlifter
A boy weighing 50 kg climbs up a vertical height of 100 m. Calculate the amount of work done by him. How much potential energy does he gain? (g = 9.8 m/s2)
To what height should a box of mass 150 kg be lifted, so that its potential energy may become 7350 joules? (g = 9.8 m/s2)
What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.
When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero?
What energy is possessed by stretched rubber?
A body is falling from a height of h. After it has fallen a height `"h"/2`, it will possess
