The drum shown in Figure RP7–7 rotates at 200 rpm and requires a braking torque of 1400 N·m. This occurs when force P 0, allowing the spring force to be applied. The coefficient of kinetic friction is...

The drum shown in Figure RP7–7 rotates at 200 rpm and requires a braking torque of 1400 N·m.

This occurs when force P 0, allowing the spring force to be applied.

The coefficient of kinetic friction is 0.6. Determine the spring force required. Which pad wears the most?