Universal law of gravitation, free fall, mass and weight, thrust and pressure, buoyancy.
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Q1 · Gravitation · EASY
The value of acceleration due to gravity on the surface of Earth is approximately:
Q2 · Gravitation · HARD
Two satellites of masses m and 2m are revolving around Earth in orbits of radii r and 2r respectively. What is the ratio of their time periods?
Q3 · Gravitation · MEDIUM
At what height above Earth's surface will the acceleration due to gravity be half its value on the surface? (Take radius of Earth = R)