State Newton's universal law of gravitation.
What do you mean by gravity? Write its any two advantages.
What are the two factors that affect the gravitational force? How do they affect?
What type of forces act on the planets while revolving around the sun?
What is geocentric theory or theory about structure of solar system?
Define force ? SI unit and CGS unit. (Gravitation)
What is the difference between free fall and weightlessness?
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