Binding Energy
Minimum energy to remove mass m from surface of Earth to infinity is:
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About This Question
- Subject
- physics
- Chapter
- gravitation
- Topic
- binding energy
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
GMm/R
This is equivalent to the Binding Energy of the object at the surface.
- Potential Energy at surface U=−RGMm.
- Energy needed to reach U=0 (infinity) is ΔU=0−(−RGMm)=RGMm.
- This refers to the energy required from rest; if already in orbit, the value is different.
This easy difficulty physics question is from the chapter gravitation, covering the topic of binding energy. It appeared in the 2025 exam.
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