Binding Energy Of Orbit
Magnitude of binding energy of planet of mass m in circular orbit radius r?
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About This Question
- Subject
- physics
- Chapter
- gravitation
- Topic
- binding energy of orbit
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
GMm/(2r)
- Definition: Binding energy is the minimum work required to remove an object in orbit to infinity (where total energy is zero).
- Relation to Total Energy: B.E. = - (Total Mechanical Energy).
- Orbital Energy formula: Etotal=−2rGMm.
- Calculation: B.E. = −(−2rGMm)=2rGMm.
- Numerical Sign: While bound, the energy is negative. Binding energy is defined as the positive magnitude needed to break the bond.
This medium difficulty physics question is from the chapter gravitation, covering the topic of binding energy of orbit. It appeared in the 2025 exam.
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