NEET2019Physics-Gravitation
NEET 2019 Physics Gravitational Potential Energy MCQ Question
Type: MCQ-numerical-Medium-Class 11
The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is:
A
mgR
B
3/2 mgR
C
1/2mgR
D
2mgR
Correct Answer
Option C
Detailed Explanation
The work done against gravity is given by W = mgh. When h = R, the work done is W = mgR. The additional factor accounts for the gravitational potential energy change as the object is moved to a height equal to the radius of the Earth.
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