Find coefficient of kinetic friction?
A 18 kg block is released from point A as shown in the figure. Its path from A to the spring is frictionless except for the portion between B and C. When the block hits the spring, it compresses the spring by 0.3 m from its equilibrium position before coming to rest momentarily. Find the coefficient of kinetic friction between the block and the rough surface loacted between points B and C. Assume the spring constant is 2500 N/m.
A 18 kg block is released from point A as shown in the figure. Its path from A to the spring is frictionless except for the portion between B and C. When the block hits the spring, it compresses the spring by 0.3 m from its equilibrium position before coming to rest momentarily. Find the coefficient of kinetic friction between the block and the rough surface loacted between points B and C. Assume the spring constant is 2500 N/m.
1 Answer
0.394
Explanation:
Applying conservation of energy from A to B;
In B to C,
Applying conservation of energy from C to rest
substituting
We get