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Net Force

A man of mass...

Question

A man of mass $80 k g$ in a lift is moving upwards with a velocity of $8 m / s$ and is brought to rest over a distance of $20 m$ . Find the force exerted on the man by the floor of elevator. $g = m / s^{2}$

A

320 N

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B

672 N

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C

840 N

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D

N o n e

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Solution

The correct option is A $320 N$
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