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+1 vote
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in Physics by (57.1k points)
An open knife of mass m is dropped from a height h on a wooden floor. If the blade penetrates up to the depth d into the wood. The average resistance offered by the wood to the knife edge is .
A. `mg`
B. `mg(1-(h)/(d))`
C. `mg(1+(h)/(d))`
D. `mg(1+(h)/(d))^(2)`

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1 Answer

0 votes
by (41.2k points)
Correct Answer - C

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