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A ball of mass 0.2 kg is thrown vertically upwards  by applying a force by hand. If the hand moves 0.2 m which applying the force and the ball goes upto 2 m height further, find the magnitude of the force. Consider  g = 10 m/s 2

Option: 1

22 N

Option: 2

4 N

Option: 3

16 N

Option: 4

20 N

Answers (1)


Work done by hand = Potential energy of the ball 

\therefore FS= mgh\Rightarrow F= \frac{mgh}{s}= \frac{0.2\times 10\times 2}{0.2}= 20 N

Posted by

Sanket Gandhi

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