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Given mass of the moon is 1/81 of the ma...

Given mass of the moon is 1/81 of the mass of the earth and corresponding radius is 1/4 of the earth. If escape velocity on the earth surface is 11.2 km / s , the value of same on the surface of the moon is

A

`0.14km//s`

B

0.5 km/s

C

2.5 km/s

D

5 km/s

Text Solution

Verified by Experts

The correct Answer is:
C
`v_ m=sqrt((2GxxM/81)/(R//4)=2/9v_e=2.5km//s`
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