A problem by Kishan Ahir
A ball of mass 0.2 kg is thrown vertically upward by applying a force by hand. If hand moves 0.2 meter while applying the force and the ball goes up to 2 m height further, find the magnitude of force. Give answer in Newton.
(Take )
The answer is 22.
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1 solution
Fs = mgh F =mgh /s ( s is displacement by hand.) F= 0.2 10 2 / 0.2 F=20.