Question 5. Calculate the polar moment of inertia for a solid circular shaft of 30 mm diameter.
76m⁴
79.5m⁴
81m⁴
84m⁴
Explanation:-
Answer: Option B. -> 79.5m⁴ Answer: (b).79.5m⁴
Question 6. A circular shaft of diameter 30 mm is tested under torsion the gauge length of test specimen is 300 mm. A torque of 2kNm produces an angle twist of 1°. Calculate CJ.