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A 20-kg block attached to a spring of sp...

A `20-kg` block attached to a spring of spring constant `5Nm^-1` is released from rest at A. The spring at this instant is having an elongation of `1m`. The block is allowed to move in smooth horizontal slot with the help of a constant force `50N` in the rope as shown. The velocity of the block as it reaches B is (assume the rope to be light)

A

4m/s

B

2m/s

C

1m/s

D

3m/s

Text Solution

Verified by Experts

The correct Answer is:
B
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