Question

Answer this question

Answer 1

Answer:

answer is D

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Answer 2

Answer:

Option(C)

Explanation:

Given,

mass = m, h = R.

At height the acceleration due to gravity decreases , hence the value of acceleration due to gravity becomes :

g' = g/(1 + h/R) = (gR/h + R)

The value of potential energy = mgh = (mghR/h + R)

Now,

h = R(Given)

Hence,

change in potential energy = (mgR²)/2R

                                       = (1/2) mgR

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