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The system is released from rest with th...

The system is released from rest with the spring initially stretched 75 mm. Calculate the velocity of the block after it has dropped `12 mm`. The spring has a stiffness of `1050 Nm^(-1)`. Neglect the mass of the small pulley. 

A

`0.371 ms^(-1)`

B

`0.45 ms^(-1)`

C

`5 ms^(-1)`

D

`2.2 m s^(-1)`

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The correct Answer is:
A
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