A light rod of length, l has two masses, m 1 and m 2 attached to its two ends. The moment of inertia of the…

A light rod of length, l has two masses, m1 and m2 attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is
  1. m1m2m1+m2l2
  2. m1+m2m1m2l2
  3. m1+m2l2
  4. m1m2l2

Solution


x1=m2lm1+m2 and x2=m1lm1+m2.

I=m1x12+m2x22=m1m2m1+m2l2.

Asked in: NEET 2016 (Phase 2)

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