Universal law, Kepler's laws, gravitational potential, satellites, escape velocity.
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Q1 · Gravitation · MEDIUM
If the radius of Earth shrinks by 2% while its mass remains the same, the acceleration due to gravity on Earth's surface will
Q2 · Gravitation · MEDIUM
The escape velocity from Earth's surface is approximately
Q3 · Gravitation · EASY
The acceleration due to gravity at the surface of Earth is approximately
Q4 · Gravitation · HARD
Two satellites of masses m and 2m are revolving around Earth in orbits of radii r and 2r respectively. The ratio of their orbital speeds is