A solid circular steel drive shaft is 4 m long and 60 mm diameter. The modulus of
rigidity of the steel is 85 GPa and its maximum allowable shear strength is 150 MPa.
The shaft is used to transmit a power of 30 kW while rotating at 500 rev/min.
Calculate the following:
a) the torque carried by the rotating shaft [2 marks]
T=(J*maximum shear stress)/r
How do i get the maximum shear stress?