Questions
If g is the acceleration due to gravity on earth's surface, the gain of the potential energy of an object of mass m raised from the surface bf the earth to a height equal to the radius R of the earth is :
a
2mgR
b
mgR
c
12mgR
d
14mgR
detailed solution
Correct option is C
Gain in PE =−GMm2R−−GMmR=GMm2R=12mgRTalk to our academic expert!
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