AIIMS2016PhysicsRotational Motion
A sphere of mass 10 ~kg and radius 0.5 ~m rotates about a tangent. The moment of inertia of the sphere is
Options
- A5 ~kg ~m ^2
- B2.7 ~kg ~m ^2
- C3.5 ~kg ~m ^2
- D4.5 ~kg ~m ^2
Correct answer
C. 3.5 ~kg ~m ^2
Step-by-step solution
M.I. about tangent =I+M R^2 aligned & = 2 5 M R^2+M R^2= 7 5 M R^2 & = 7 5 (10) (0.5)^2=3.5 ~kg ~m ^2 aligned