A body of mass m is lifted up from the surface of earth to a height three times the radius of the earth. The change in potential energy of the body is (g = gravity field at the surface of the earth)
A
mgR
B
mgR
C
mgR
D
mgR
Text Solution
Verified by ExpertsThe correct answer is:
B
Δ U = m (V f – V i )
Δ U = m 
= 
m 
= 
mR 
= mRg × 3/ 4
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