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A block of mass .m. moving with a speed ...

A block of mass .m. moving with a speed `.upsilon.` compresses a spring through a distance .x. before its speed reduces by 25%. The spring constant of the spring is

A

`(m upsilon^(2))/(4 x^(2))`

B

`(3m upsilon^(2))/(4x^(2))`

C

`(7m upsilon^(2))/(16 x^(2))`

D

`(9m upsilon^(2))/(16 x^(2))`

Text Solution

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The correct Answer is:
C
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