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i ) A solid shaft, shown below, is 2 . 5 m long and has a radius of 2 5 mm . The shaft has
i A solid shaft, shown below, is m long and has a radius of mm The shaft has a
tangential force of N applied to it If the Modulus of rigidity G is GPa
determine,
a The angle of twist, in radians.
b The maximum shear stress in the shaft
c The distribution of shear stress in the shaft by hand sketching the diameter of
the bar, showing the stress in the end that is twisted. ii Your supervisor would now like you to compare the maximum shear stress in a above with a hollow shaft with similar dimensions. The hollow shaft is long
and has an outer radius of and an inner radius of The hollow shaft
has the same torque applied as the solid shaft above. If the Modulus of rigidity G
for the material used is GPa determine,
a The angle of twist of the hollow shaft, in radians.
b The maximum shear stress in the tube
c The distribution of shear stress in the hollow shaft by hand sketching the end of
the tube that is twisted and showing the stress distribution for the hollow shaft
material.
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