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Two equal masses are attached to the tw...

Two equal masses are attached to the two ends of a spring of spring constant k. The masses are pulled out symmetricaly tostretch the spring by a length x over its natural length. The work doen by the spring oneach mass is

A

`(1)/(2)kx^2`

B

`-(1)/(2)kx^2`

C

`(1)/(4)kx^2`

D

`-(1)/(4)kx^2`

Text Solution

Verified by Experts

The correct Answer is:
D
`triangleU=(1)/(2)kx^2`
Work done by spring on each mass `=-(1)/(4)kx^2`
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