Question

What process is potential energy gained ?

A. A stone is tossed upwardly in the gravitational field

B. A pendulum swinging up

C. A kid running up a hill

D. An airplane going above the clouds

E.All of the above

Answer 1

The kid running up ahill

Answer 2

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A is the right answer because

Gravitational potential energy may be converted to other forms of energy, such as kinetic energy. If we release the mass, gravitational force will do an amount of work equal to mgh on it, thereby increasing its kinetic energy by that same amount (by the work-energy theorem). ... As the clock runs, the mass is lowered.

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