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An open knife edge of mass M is dropped ...

An open knife edge of mass M is dropped from a height h on wooden floor. If the blade penetrates a distance s into the wood, the average resistance offered by the wood to the blade is

A

Mg

B

`Mg(1 + h/s)`

C

`Mg(1 -h/s)`

D

`Mg(1+ h/s)^(2)`

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Verified by Experts

The correct Answer is:
B
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