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An elastic spring is compressed between ...

An elastic spring is compressed between two blocks of masses `1 kg` and `2 kg` resting on a smooth horizontal table as shown. If the spring has `12 J` of energy and suddenly released, the velocity with which the larger block of `2 kg` moves will be
.

A

`2 m//s`

B

`4 m//s`

C

`1 m//s`

D

`8 m//s`

Text Solution

Verified by Experts

The correct Answer is:
A
`(1)/(2) Kx^(2) = KE_(1) + KE_(2)` and `m_(1)v_(1) = m_(2)v_(2)`.
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