Escape velocity of a body from earth is 11.2 km/s. If the radius of a planet be one-third the radius of earth and mass be one-sixth that of earth, the escape velocity from the plate is:
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Escape velocity of a body from earth is 11.2 km/s. If the radius of a planet be one-third the radius of earth and mass be one-sixth that of earth, the escape velocity from the plate is:

G1 Physics · Accepted Answer

Escape velocity: vₑ = √(2GM/R) For the planet: Mₚ = Mₑ/6 Rₚ = Rₑ/3 Therefore, vₚ/vₑ = √[(Mₚ/Rₚ)/(Mₑ/Rₑ)] = √[(1/6)/(1/3)] = 1/√2 Hence, vₚ = 11.2/√2 ≈ 7.9 km/s