Question
A body placed at a distance R₀ form the center of earth, starts moving from rest. The velocity of the body on reaching at the earth’s surface will be ( Rₑ = radius of earth and Mₑ = mass of earth)
Options :
GMₑ(1/Rₑ - 1/R₀)
2GMₑ(1/Rₑ - 1/R₀)
GMₑ√(1/Rₑ - 1/R₀)
√(2GMₑ[1/Rₑ - 1/R₀])
Answer :
√(2GMₑ[1/Rₑ - 1/R₀])
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