A uniform rod AB of mass 3m and length 4l, which is free to turn in a vertical plane about a smooth horizontal axis through A, is released from rest when horizontal. When the rod first becomes vertical, a point C of the rod, where AC = 3l, strikes a fixed peg. Exerted by the peg on the rod if the rod is brought to rest by peg is x/3msqrt(3gl) where 'x' is

A uniform rod AB of mass 3m and length 4l, which is free to turn in a

1.	A uniform rod AB of mass 3m and length 4l, which is free to turn in a vertical plane about a smooth horizontal axis through A, is released from rest when horizontal. When the rod first becomes vertical, a point C of the rod, where AC = 3l, strikes a fixed peg. Exerted by the peg on the rod if the rod is brought to rest by peg is x/3msqrt(3gl) where 'x' is
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