engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Strength of Materials Torsion of Shaft Moment of Inertia about Polar Axis
Consider a long tube of 25 mm outside diameter (\(d_o\)) and of 20 mm inside diameter (\(d_i\)) twisted about its longitudinal axis with a torque T of 45 N-m. The polar moment of inertia of the hollow tube is-
1
22641 mm4
2
36980 mm4
3
18933 mm4
4
27271 mm4