Problem -02 Dry FrictionKnowing that a couple of magnitude 30 N m is required to start the vertical shaft rotating against a collar bearing as shown in figure-2, determine the coefficient of static friction between the annular surfaces of contact.

The band brake of Fig. is used to control the rotation of a drum. The coefficient of friction between the belt and the 36° V-pulley is 0.15, and the weight of the han- dle is 15 N. If a force of 200 N is aPplied to the end of the handle, determine the maximum torque for which no mo- tion occurs if the torque is applied Counterclockwise. 150 mm T 200 N 60 150 mmi 675 mm 75 mm

100 mm 200 mm GIVEN: Coefficient of static friction at A = 0.4 Collar at B is smooth and exerts horizontal force on pipe Mass of bracket is negligible ASK What is minimum distance x so bracket can support cylinder at any mass without slipping?

10 kN FIGURE P5-36 In Problem 5-36, if a force P= 400 N is required to resist the 10-kN force. determine the coefficient of static friction between the rope and the shafts. 5-37