Questions
Two discs have same mass and thickness. Their materials are made of densities d1 and d2. The ratio of their moments of inertia about an axis passing through the centre and perpendicular to the plane is
detailed solution
Correct option is B
We have, πR2td=m (∵ Mass = Density × Volume )∴ R2=mπtdNow, I=12mR2=m22πtdor I∝1d∴ The ratio of moments of inertia, I1I2=d2d1Talk to our academic expert!
Similar Questions
I. Angular momentum of a particle moving in a straight line is always constant with respect to fixed point.
II. Moment of inertia of a body remains same irrespective of position of axis of rotation.
Which of the statement{s} is/are correct?
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