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A body is orbiting very close to the ear...

A body is orbiting very close to the earth surface kinetic energy K.E. The energy required to completely escape from it is

A

`sqrt2KE`

B

`KE`

C

`KR//sqrt2`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Energy required
`=1/2mv_e^2-1/2mv_0^2rArr1/2mv_0^2(sqrt2-1)[becausev_e=sqrt2v_0]`
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