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Binding energy of moon and earth is :-...

Binding energy of moon and earth is :-

A

always positive

B

always negative

C

can be positive or negative

D

always zero

Text Solution

Verified by Experts

The correct Answer is:
B
Because when two masses come together slowly from infinity work is done on the system.
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PREMIERS PUBLISHERS-GRAVITATION-OTHER IMPORTANT QUESTION & ANSWERS (CONCEPTUAL QUESTIONS)
  1. Binding energy of moon and earth is :-

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  2. Why a body weighs less at the equator than at the poles?

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  3. Where does a body weigh less? At the sea level or on the mountains?

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  4. Why do you feel giddy while moving on Raatinam (or) Carrousel?

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  5. Explain why one can jump higher on the surface of the Moon than that o...

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  6. A planet revolves in an elliptical orbit around the Sun. The semi-majo...

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  7. If Earth be at one fourth its present distance from the Sun, how many ...

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  8. State Newtons Universal law of gravitaion.

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  9. Why does the gravitational potential energy U(r) is always negative?

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  10. What happens to the acceleration due to gravity on account of rotation...

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  11. Under what condition, the gravitational potential energy of a body wil...

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  12. Can we determine the gravitational mass of a body inside an artificial...

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  13. Mention the factors which determine whether a planet would have an atm...

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  14. If the Earth stops rotating about its axis, then by what value will th...

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  15. A hippopotamus and a frog are to be projected out of Earth into space....

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  16. Tides arise in the ocean. Give reason.

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  17. Why does an astronaut in a spacecraft feel weightlessness?

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  18. Where does the weight of a body become zero?

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  19. Why a body weighs less at the equator than at the poles?

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  20. Where does a body weigh less? At the sea level or on the mountains?

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  21. Why do you feel giddy while moving on Raatinam (or) Carrousel?

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