1.

A thin rod of length l and mass m isturned at mid-point O at angle of 60°. The moment of inertia of the rod about an axis passing through O and perpendicular to the plane of the rod will be

Answer»

`ML^(2)//3`
`(ml^(2))/6`
`(ml^(2))/8`
`(ml^(2))/12`

SOLUTION :M.I. of a uniform rod about one end =`(ml^(2))/3`
M.I. of the system=`2xx(m/2)((l//2)^(2))/3=(ml^(2))/12`


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