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The spring is compressed by a distance a...

The spring is compressed by a distance a and released. The block again comes to rest when the spring is elongated by a distance `b`. During this

A

Work done by the spring on the block `=1/2k(a+b)^(2)`

B

Work done by the spring on the block `=1/2 k(a^(2)-b^(2))`

C

Coefficient of friction `=(k(a-b))/(2mg)`

D

Coefficient of friction `=(k(a+b))/(2mg)`

Text Solution

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The correct Answer is:
B, C
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