5–24. The copper pipe has an outer diameter of 2.50 in.
and an inner diameter of 2.30 in. If it is tightly secured to the
wall at C and a uniformly distributed torque is applied to it
as shown, determine the shear stress developed at points A
and B. These points lie on the pipe’s outer surface. Sketch
the shear stress on volume elements located at A and B.
5–25. The copper pipe has an outer diameter of 2.50 in. and
an inner diameter of 2.30 in. If it is tightly secured to the wall
at C and it is subjected to the uniformly distributed torque
along its entire length, determine the absolute maximum
shear stress in the pipe. Discuss the validity of this result.