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| 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 sprinn on the block `= (1)/(2)k(a + b)^(2)`B. work done by sprinn on the block `= (1)/(2)k(a^(2) - b^(2))`C. co-eff. of frication `= (k(a-b))/(2mg)`D. co-eff. of frication `= (k(a+b))/(2mg)` |
| Answer» Correct Answer - B::C | |