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Problem 1 A block of mass m = 2 kg moves toward a spring of constant k. When
it is at a distance L = 1 m from the end of the spring, it has a speed
of v 4 m/s. It then hits and compresses the spring to the maximum
distance z = 0.3 m. The coefficient of kinetic friction between the
block and the floor is = 0.1. Find the spring constant k.
m
L
x
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