5.
Find the gravitational potential energy of 2,5 kg
mass kept at a height of 15 m above the ground
The force of gravity on mass 1 kg is 10 N.
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Answer:
m = 2.5 kg
h = 15m
g = 10m/s^2
U = mgh
= 2.5 × 10 × 15
=. 375J
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