PE=KE: mgh= KE
KE=PE(of compressed spring) KE= kx^2/2
mgh = kx^2/2
k =2mgh/x^2
A block of mass m = 300 g is released from rest and slides down a frictionless track of height h = 59.4 cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring compressed by 2.21 cm at the maximum compression. What is the value of the spring constant k?
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