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

Question

Philoid · Accepted Answer

The rod is uniform and the length is l. So, the center of mass is at l/2 distance. The equation of motion,

As, the force on center of mass is in –j direction, it falls directly on the point O. Hence, the end is at a distance l/2.