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)`

The spring is compressed by a distance a and released. The block again

1.	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)`
Answer» Correct Answer - B::C

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