A hollow shaft has outside diameter 120 mm and thickness 20 mm. Find the polar moment of inertia (J).$

14.65 ‚Äö√†√∂‚àö‚â• 10 6 mm 4

16.36 ‚Äö√†√∂‚àö‚â• 106 mm4

14.65 ‚Äö√†√∂‚àö‚â• 106 mm4

10.32 ‚Äö√†√∂‚àö‚â• 106 mm4

23.18 ‚Äö√†√∂‚àö‚â• 106 mm4

A hollow shaft has outside diameter 120 mm and thickness 20 mm. Find t

1.	A hollow shaft has outside diameter 120 mm and thickness 20 mm. Find the polar moment of inertia (J).$
A.	16.36 ‚Äö√†√∂‚àö‚â• 10<sup>6</sup> mm<sup>4</sup>
B.	14.65 ‚Äö√†√∂‚àö‚â• 10<sup>6</sup> mm<sup>4</sup>
C.	10.32 ‚Äö√†√∂‚àö‚â• 10<sup>6</sup> mm<sup>4</sup>
D.	23.18 ‚Äö√†√∂‚àö‚â• 10<sup>6</sup> mm<sup>4</sup>
Answer» B. 14.65 ‚Äö√†√∂‚àö‚â• 10<sup>6</sup> mm<sup>4</sup>