Gravitation
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Question : 15
Total: 25
A body weighs 63 N on the surface of the earth. What is the gravitational force on it due to the earth at a height equal to half the radius of the earth?
Solution:
Acceleration due to gravity g at height h is given by
g ′ =
=
=
g
Gravitational force on body at height h is
F = m g ′
= m
g
= m g
= 63 ×
= 28 N [ ∵ m g = 63 ]
Gravitational force on body at height h is
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