Q. A uniform rod is kept vertically on a horizontal smooth surface at a point $O$. If it is rotated slightly and released, it falls down on the horizontal surface. The lower end will remain :

System of Particles and Rotational Motion Report Error

A

At $O$

B

At a distance less than $l / 2$ from $O$

C

At a distance $/ / 2$ from $O$

D

At a distance larger than $1 / 2$ from $O$

Solution:

As no external horizontal force is there on rod, its center of mass falls vertically so the lower end will be at a distance $l / 2$ from $O$ after it falls on ground.

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