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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 `:`A. `(2U)/(v)`B. `(U)/(2v)`C. `(2U)/(v^(2))`D. `(U)/(2v^(2))` |
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Answer» Correct Answer - C By COME loss is `PE=`gain in `KE` `:` `U=(1)/(2)mv^(2)rArrm=(2U)/(v^(2))` |
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