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A spring of force constant K rests on a ...

A spring of force constant K rests on a smooth floor, with one end fixed to a wall. A block of mass m hits the free end of the spring with velocity v. The maximum force exerted by the spring on the wall is

A

`vsqrt((mk))`

B

`mvsqrt(k)`

C

`msqrt((vk))`

D

`ksqrt((mv))`

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The correct Answer is:
A
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