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Question 4 [23] A shaft used for a water pump has a diameter of 50 mm and a length of 0.7 m long and is subjected to a torque of 1200 Nm. If G = 90 GPa. (a) what is the possible maximum shear stress this shaft can possess? With the aid of computation, suggest the angle of twist of this shaft. (10) (b) If the designer decides to make this shaft a hollow type with an internal diameter of 30 mm, what will be the new shear stress and the angle of twist. (13)

          Question 4
[23]
A shaft used for a water pump has a diameter of 50 mm and a length of 0.7 m
long and is subjected to a torque of 1200 Nm. If G = 90 GPa.
(a) what is the possible maximum shear stress this shaft can possess? With
the aid of computation, suggest the angle of twist of this shaft. (10)
(b) If the designer decides to make this shaft a hollow type with an internal
diameter of 30 mm, what will be the new shear stress and the angle of
twist. (13)

Question 4
[23]
A shaft used for a water pump has a diameter of 50 mm and a length of 0.7 m
long and is subjected to a torque of 1200 Nm. If G = 90 GPa.
(a) what is the possible maximum shear stress this shaft can possess? With
the aid of computation, suggest the angle of twist of this shaft. (10)
(b) If the designer decides to make this shaft a hollow type with an internal
diameter of 30 mm, what will be the new shear stress and the angle of
twist. (13)

Added by Vicente S.

University Physics with Modern Physics

Hugh D. Young 14th Edition

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Question 4 A shaft is 23 meters long and is subjected to a torque of 1200 Nm. If G = 90 GPa, (a) what is the possible maximum shear stress this shaft can possess? With the aid of computation, suggest the angle of twist of this shaft. (10) (b) If the designer decides to make this shaft a hollow type with an internal diameter of 30 mm, what will be the new shear stress and the angle of twist? (13)