A weightless rod of length \( 2 l \) carries two equal masses \( m \). One is tied at end \( A \...

A weightless rod of length \( 2 l \) carries two equal masses \( m \). One is tied at end \( A \) and other at middle of rod \( B \). The rod can rotate in vertical plane about a fixed horizontal axis passing through \( C \).
\( P \)
W
The rod is released from rest in horizontal position. Then which of the following option(s) is/are correct?
(1) The speed of mass \( B \) at the instant rod becomes vertical is \( \sqrt{\frac{6}{5} g l} \). becomes vertical.
(3) The tension in thread \( B C \) is \( \frac{28}{5} m g \) when the rod becomes vertical.
(4) The hinge reaction at the hinge point \( C \) is \( \frac{28}{5} m g \) when the rod becomes vertical.