Question

A body falling under gravity. When it loses a gravitational potential energy by u its speed is v the mass of body is

Answer 1

Given :

Initial velocity =u=0 m/s

final velocity =v m/s

Potential energy is transformed to Kinetic energy

P.E=K.E

As we know that P.E=U

K.E=1/2 mv²

U=1/2mv²

so m=2U/v²

∴mass of the body is 2U/v²

Answer 2

heya..

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