A shaft made of steel receives 7.5 kW power at 1500 rpm. A pulley mounted on the shaft as shown in Fig. has ratio of belt tensions 4. The gear forces are as follows: Ft = 1590 N; Fr=580 N Designe the...

A shaft made of steel receives 7.5 kW power at 1500 rpm. A pulley mounted on the shaft as shown in Fig. has ratio of belt tensions 4. The gear forces are as follows:

F_t
= 1590 N; F_r=580 N

Designe the shaft diameter by maximum shear stress theory. The shaft material has the following properties:

Ultimate tensile strength = 720 MPa: Yield strength = 380 MPa: Factor of safety = 1.5