A cylinder having a mass of 250 kg is to be supported by the cord that wraps over the pipe...

A cylinder having a mass of 250 kg is to be supported by the cord that wraps over the pipe. Determine the largest vertical force F that can be applied to the cord without moving the cylinder. The cord passes (a) once over the pipe, β = 180°, and (b) two times over the pipe, β = 540°. Take µs = 0.2.