A body is dropped from a certain height. At the instant it loses P.E.U. It acquires a velocity 'v' the mass of the body is :

A body is dropped from a certain height. At the instant it loses P.E.U

1.	A body is dropped from a certain height. At the instant it loses P.E.U. It acquires a velocity 'v' the mass of the body is :
Answer» `U^(2)//2V` `2V//U` `2V//U^(2)` `2U//V^(2)` SOLUTION :GAIN in K.E. = LOSS in p.E. `:. 1/2mv^(2)=U` `:. M=(2U)/(V^(2))`

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A body is dropped from a certain height. At the instant it loses P.E.U. It acquires a velocity 'v' the mass of the body is :

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