A 10.0-kg block is released from rest at point A in the figure
below. The track is frictionless except for the portion between
points B and C , which has a length of 6.00 m. The block travels
down the track, hits a spring of force constant 2250 n/m, and
compresses the spring 0.300 m from its equilibrium position before
coming to rest momentarily. Determine the coefficient of kinetic
friction between the block and the rough surface between points B
and C