Compute the nominal shear stress at the surface in MPa for a 40 mm diameter shaft that transmits 750 kW at 1500 rpm. Axial and bending loads assumed negligible. Torsional shearing stress is 28 N/mm2.

The members of the structure in the figure weigh 200 lb/ft. Determine the smallest diameter pin that can be used at A if the shearing stress is limited to 5000 psi. Assume single shear. 

A shaft is subjected to a maximum torque of 14 KN-m and a maximum bending moment of 10 KN- m at 
a particular section. Determine the diameter of the shaft according to maximum shear stress theory if the 
elastic limit in simple tension is 180 MPa

Determine the average shear stress in the 20-mm-diameter pin at A and the 30-mm-diameter pin at B that support the beam shown below.