A weightless rod of length `2l` carries two equal masses \'m\', one tied at lower
Channel: Doubtnut
Date: 19/01/2020

A weightless rod of length `2l` carries two equal masses \'m\', one tied at lower end `A` and the other at the middle of the rod at `B`. The rod can rotate in vertical plane about a fixed horizontal axis passing thriugh `C` . The rod of is released from rest in horizontal possion. The speed of the mass `B` at the instant rod become vertical is: