System shown in figure is released from rest. Pulley and spring are massless and friction is absent every where. The speed of 5 kg block when 2 block leaves a contact with ground is [k=40N/m"and" g=10ms^(-2)]

System shown in figure is released from rest. Pulley and spring are ma

1.	System shown in figure is released from rest. Pulley and spring are massless and friction is absent every where. The speed of 5 kg block when 2 block leaves a contact with ground is [k=40N/m"and" g=10ms^(-2)]
Answer» `SQRT(2)MS^(-1)` `2sqrt(2)ms^(-1)` `2ms^(-1)` `4sqrt(2)ms^(-1)` ANSWER :B