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QAIPMT-2003-Ph-2751: NEET 2003 Physics - Class 11 AIPMT-2003-Ph-2751 Solution: A body of mass m is placed on earth's surface which is taken…
A body of mass m is placed on earth's surface which is taken from earth surface to a height of h = 3R, then change in gravitational potential energy is
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Step-by-Step Verified Solution
Gravitational potential energy on earth�s surface = _ G M m R , where M and R are the mass and radius of the earth respectively, m is the mass of the body and G is the universal gravitational constant.
Gravitational potential energy at a height h = 3R
= _ G M m R + h = _ G M m R + 3 R = _ G M m 4 R
_ Change in potential energy
= _ G M m 4 R _ ( _ G M m R )
= _ G M m 4 R + G M m R
= 3 4 G M m R = 3 4 m g R