Figure Q3(b) shows a solid steel rod AB having a diameter of 60 mm while the...
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Figure Q3(b) shows a solid steel rod AB having a diameter of 60 mm while the steel pipe CD has an outer diameter of 70 mm and a wall thickness of 6 mm. Modulus of rigidity of steel is 83 GPa, Determine the maximum permissible value of torque, T provided that the maximum shearing stress in rod and pipe is not to exceed 70 MPa. (10 marks) Lco = 1.0 m A Laa = 1.4 m Figure Q3(b) Evaluate the changes in the angle of twist of shaft ABCD in QUESTION 3(b), if shaft CD was changed to solid, while shaft AB remain the same. Justify your answer. [No calculation is required). Figure Q3(b) shows a solid steel rod AB having a diameter of 60 mm while the steel pipe CD has an outer diameter of 70 mm and a wall thickness of 6 mm. Modulus of rigidity of steel is 83 GPa, Determine the maximum permissible value of torque, T provided that the maximum shearing stress in rod and pipe is not to exceed 70 MPa. (10 marks) Lco = 1.0 m A Laa = 1.4 m Figure Q3(b) Evaluate the changes in the angle of twist of shaft ABCD in QUESTION 3(b), if shaft CD was changed to solid, while shaft AB remain the same. Justify your answer. [No calculation is required).
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