1.A stepped shaft ACB having a solid circular cross sections with two different diameters is held against rotation at the ends. If the allowable shear stress in the shaft is 60MPa, what is the maximum torque (To)max that may be applied at section C?
Please Explain
2.Two blocks A and B have a weight of 10lb and 6lb, respectively. They are resting on the incline for which the coefficients of static friction are u_A=0.15 and u_B=0.25, Determine the incline angle theta which will cause motion of one of the blocks. What is the friction force under each of the blocks when this occurs?