A particle is kept at rest at a distance R (Earth's radius) above the earth's surface. The minimum speed with which it should be projected so that it does not return is

Question

A particle is kept at rest at a distance R (Earth's radius) above the earth's surface. The minimum speed with which it should be projected so that it does not return is, G M 4 R, G M 2 R, G M R, 2 G M R

MARKS App · Accepted Answer

According to the conservation of energy, K . E. = U G 1 2 m v 2 = G M m R + h 1 2 m v 2 = G M m R + R = G M m 2 R Therefore, the escape velocity is, v = G M R

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