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System shown in figure is released from rest. Pulley and spring is massless and friction is absent everywhere. The speed of 5 kg block when 2 kg block leaves contact with ground is (Take froce constant of spring k = 40 N/m and `g = 10 m//s^(2)`)

A

`sqrt(2) ms^(-1)`

B

`2sqrt(2) ms^(-1)`

C

`2 ms^(-1)`

D

`4sqrt(2) ms^(-1)`

Text Solution

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The correct Answer is:
B
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