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The gravitational force is always attrac...

The gravitational force is always attractive in nature. Why?

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Because of negative sign in equation `vec(F) = -(GM_(1)M_(2))/(r^2) hat^(r)` that the gravitational force is always attractive in nature and the direction of the force is along the line joining the two masses.
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SURA PUBLICATION-GRAVITATION-VERY SHORT ANSWER QUESTIONS: (2 Marks)
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  11. A comet orbits the sun is highly elliptical orbit. Does a comet has a ...

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  13. State the theory of geocentric model of solar system? And by whom thi...

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  14. State the theory proposed by Copernicus?

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  15. What did Galileo discover regarding gravitation?

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  16. What does the law of period of Kepler's law imply?

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  17. The gravitational force is always attractive in nature. Why?

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

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  19. What is 'retrograde motion' of planets?

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  20. Find the distance between Venus and Sun.

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