How Is Maximum Shear Stress Calculated for a Solid Circular Shaft?

[Solidsam]

Homework Statement

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]

Homework Equations

J=pi(R^4)/2=1.272*10^6 mm^4

T=(J*maximum shear stress)/r

Homework Statement

How do i get the maximum shear stress?

 

[SteamKing]

You haven't shown any equations or work to determine the amount of torque acting on the shaft at the rated conditions.

 

[Solidsam]

You haven't shown any equations or work to determine the amount of torque acting on the shaft at the rated conditions.

ok well could u tell me what i should do

 

[Solidsam]

oh T=30000/(500*(pi/30))