A hollow shaft has an inner diameter of 3.7 cm and an outer diameter of 4.0 cm. A 1 kN-m torque is applied to this shaft. What is the shear stress at the mid-radius of this shaft?
(a) 117Mpa
(b) 178 Mpa
(c) 286 Mpa
(d) 363 Mpa
(a) 117Mpa
(b) 178 Mpa
(c) 286 Mpa
(d) 363 Mpa