A solid circular shaft and a hollow circular
shaft have the same outer diameter and are made of the same material. The
hollow shaft has an inner diameter equal to half its outer diameter. Both
shafts are subjected to the same applied torque T.

Which of the following statements is correct?

Question

A solid circular shaft and a hollow circular
shaft have the same outer diameter and are made of the same material. The
hollow shaft has an inner diameter equal to half its outer diameter. Both
shafts are subjected to the same applied torque T.

Which of the following statements is correct?

Accepted Answer

The hollow shaft develops a higher maximum
shear stress than the solid shaft, because removing material from the centre
reduces J.

Answer

The
hollow shaft develops a lower maximum shear stress than the solid shaft,
because removing material reduces the cross-sectional area and therefore the
stress.

Answer

Both
shafts develop the same maximum shear stress because the outer radius is the
same.

Answer

The
solid shaft develops a higher maximum shear stress than the hollow shaft,
because its greater J means the stress is more spread out.

Crowdly

A solid circular shaft and a hollow circular shaft have the same outer diameter...

Want instant access to all verified answers on moodle.telt.unsw.edu.au?