A uniform rod of mass `m` and length `l` is applied pivoted at point `O`. The rod is initially in
Channel: Doubtnut
Date: 2020-07-12

A uniform rod of mass `m` and length `l` is applied pivoted at point `O`. The rod is initially in vertical position and touching a block of mass `M` which is at rest on a horizontal surface. The rod is given a slight jerk and it starts rotating about point `O` this causes the block to move forward as shown The rod loses contact with the block at `theta=30^(@)` all surfaces are smooth now answer the following questions.  Q. The hinge reaction at `O` on the rod when it loses contact with the block is