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 r = 0.3 m. The coefficient of kinetic friction between the block and the floor is = 0.1. Find the spring constant k. m L ! V x k

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 r = 0.3 m. The coefficient of kinetic friction between the block and the floor is = 0.1. Find the spring constant k. m L ! V x k