1.

The moment of inertia of a unifmm rod of mass M and length L about an axis through centre and perpendicular to length L is given by (ML^(2))/12 . Now consider one such rod pivoted at its centre free to rotate in a vertical plane. The rod is at rest in the vertical position. A bullet of mass M moving horizontally at a speed V strikes and gets embedded in one end of the rod. The angular velocity CD of the rod after collision will be

Answer»

`V//L`
`2V//L`
`3V//2L`
`6V//L`

Solution :Angular momentum CONSERVATION gives
`MVL/2=(ML^(2))/3omegarArromega=(3V)/(2L)`


Discussion

No Comment Found

Related InterviewSolutions