1.

A body of mass m is placed on the earth?s surface. It is taken from the earth?s surface to a height \[h=3R\]. The change in gravitational potential energy of the body is [CBSE PMT 2002]

A. \[\frac{2}{3}mgR\]
B. \[\frac{3}{4}mgR\]
C. Zero at all points inside the loop
D. \[\frac{mgR}{4}\]
Answer» C. Zero at all points inside the loop


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