IIT JEE , AIEEE Forum - Physics , Mechanics

harsha_27

see as mass is to force M.I. is to torque that

is more the M.I. more difficult it is to

rotate

moment of inertia depends on the mass along

with its distance from the axis ........however

varies more with distance (as it is

r^2)

.............so if major amount of mass of the

whole body is concentrated away from the

axis of rotation, more difficult it will be to

rotate that body hence more will be the M.I.

............as an example u can take solid and

thin hollow spheres of same mass .....now

here , as the mass is concentrated at more

distance in hollow sphere its M.I. is more than

solid sphere...........understood???

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