A body (intially at rest is falling under gravity. When it loses a gravitational potential energy by `U`, its speed is `v`.The mass of the body shall be `:`

Options

A. `(2U)/(v)`
B. `(U)/(2v)`
C. `(2U)/(v^(2))`
D. `(U)/(2v^(2))`

Answer

C

Explanation

By COME loss is `PE=`gain in `KE` `:`
`U=(1)/(2)mv^(2)rArrm=(2U)/(v^(2))`