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What will be gain in potential energy of...

What will be gain in potential energy of a body of mass m at a height equal to three times the radius 'R' of the earth ?

A

`(x)/(sin phi)`

B

`(x)/(cos phi)`

C

`(x)/(tan phi)`

D

x

Text Solution

Verified by Experts

The correct Answer is:
B
Given, h=x cm, `theta=phi`
let, e=length of mercury column
`therefore (lamda)/(l)=sin(90^(@)-phi) implies (x)/(l)=cos phi`
`implies l=x//cos phi=x "sec" phi`
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