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**1. The problem statement**

A 10 kg block is released from point A on a track ABCD. The track is frictionless except for the portion BC, of length 6 m. The block travels down the track and hits a spring of force constant k = 2250 N/m and compresses it a distance of 0.3 m from its equilibrium position before coming to rest momentarily. Determine the coefficient of kinetic friction between the track portion BC and the block.

***ADDITIONAL INFO

The height is 3 meters from the slope from A>B, while points B>C>D are completely horizontal.

## The Attempt at a Solution

PE = KE

I find at point B the velocity of the block is 7.67 m/s. However I'm unable to figure out the next step.

I started with using KE = PE (spring) and found a difference of about 192 N, which I'm not sure has anything to do with the problem (the difference of the block slowing down?) but am not sure.

**I do know the answer is 0.327, so I'm not after an answer, I simply just want to know how to do the problem.**

Any direction would be appreciated, the more the better,

Thanks