The work done by the gravitational force on a body in displacing it from a given position nearthe surface of Earth to infinity is calledI. elastic potential energy.II. potential energy of the body.III. absolute potential energy of the body.
Correct answer: B. III only
- A. I only
- B. III only
- C. II and III
- D. I and II
Explanation
The work done by the gravitational force to move a body from the surface of Earth to infinity is termed the 'absolute potential energy' of the body. This is because it measures the total work needed to overcome the gravitational pull completely. 'Elastic potential energy' is incorrect as it pertains to elastic forces, not gravitational. 'Potential energy of the body' is a broader term that doesn't specify the context of moving to infinity, thus making option III only the correct choice.
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About Potential Energy
Potential energy is energy stored because of position or configuration, including gravitational potential energy near Earth's surface and elastic energy in a stretched or compressed spring. Questions use changes in potential energy and conservation of mechanical energy, while distinguishing a chosen reference level from an absolute zero of energy.
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