If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth is
A
21mgR
B
2mgR
C
41mgR
D
mgR
Medium
Open in App
Updated on : 2022-09-05
Solution
Verified by Toppr
Correct option is A)
Gain in potential energy =(−2RGMm)−(−RGMm) =RGMm−2RGMm =2RGMm =2RmgR2As,GM=gR2 =21mgR