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Standard XI
Physics
Problems on Potential Energy
Question

A pile driver drives postes into the ground by repeatedly dropping a heavy object on them. Assume the object is dropped from the same height each time. By what factor does the energy of the pile driver-Earth system change when the mass of the object being dropped is doubled?

A
$$1$$; the energy is the sane
B
$$4$$
C
$$\dfrac{1}{2}$$
D
$$2$$
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Solution
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Correct option is C. $$2$$

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