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)/(2)k(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)/(2)k(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 - C

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