SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the gain in gravitational potential energy of a body of weight 2000N as it rises from a height of 20 m to a height of 25m above the earth’s surface?
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400 J
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1000 J
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10 000 J
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20 000 J
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Explanation:
Detailed explanation-1: -The change in gravitational potential energy, PEg, is PEg = mgh, with h being the increase in height and g the acceleration due to gravity.
Detailed explanation-2: -A satellite circles the earth at an altitude of approximately 20, 000 km, where the gravitational acceleration is 5.8% of its surface value.
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