A motor driving a soiid circular steel shaft transmits 40

A motor driving a soiid circular steel shaft transmits 40 kW of power at 500 rpm. If the diameter of the shaft is 40 mm, the maximum shear stress in the shaft is ______ MPa.

We know that, Power is given by

P =	2πNT
	60

4 × 10³ =	2π × 500 × T
	60

T = 763.94 Nm

T =	π	d³τ
	16

763.94 × 10³ =	π	× 40³ × τ
	16

τ = 60.79 × 10⁶ Pascal
τ = 60.79 MPa