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.

A circular shaft of diameter 30 mm is tested under torsion the gauge l

1.	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.
A.	0.432 10<sup>6</sup> N/mm<sup>2</sup>
B.	0.324 10<sup>6</sup> N/mm<sup>2</sup>
C.	0.46 10<sup>6</sup> N/mm<sup>2</sup>
D.	0.532 10<sup>6</sup> N/mm<sup>2</sup>
Answer» B. 0.324 10<sup>6</sup> N/mm<sup>2</sup>