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Question

Find the escape velocity on the surface of the moon, if the mass and radius of the moon are 7.34×1022kg and 1.74×106m respectively.
  1. 2.37

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Solution

The correct option is A 2.37
Given: Gravitational constant G=6.67×1011Nm2kg2
Mass of moon, M=7.34×1022 kg
Radius of the moon, R=1.74×106m
We know, escape velocity,
vesc = 2GMR
vesc=2×6.67×1011×7.34×10221.74×106
=2.37 kms1

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