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A planet of radius R=1/10 (radius of th...

A planet of radius `R=1/10` (radius of the Earth) has the same mass density as the Earth. Scientists dig a well of depth R/5 on it and lower a wire of the same length and of linear mass density `10^(-3) kgm^(-1)` into it. If the wire is not touching anywhere, the force applied at the top of the wire by a person holding it in place is (take the radius of Earth = `6xx10^6` m and the acceleration due to gravity of Earth is `10 m s^(-2)` )

A

`96N`

B

`108N`

C

`120N`

D

`150N`

Text Solution

Verified by Experts

The correct Answer is:
B
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