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Physics
Physics
Problem
If acceleration due to gravity at surface of Earth is g, then increase in potential energy in lifting an object of mass m to a height equal to the radius R of Earth will be :- (A)
m
g
R
2
\frac{mgR}{2}
2
m
g
R
(B) 2mgR (C) mgR (D)
m
g
R
4
\frac{mgR}{4}
4
m
g
R
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