Show me the steps to solve Two bars are homogeneous and have a mass of

kg$/$unit length. Determine the angular velocity of the bars when they become colinear if the system is released from rest in the position shown:

Slender bar, AB$,$ of length L is pinned at A and horizontal to the right. Slender bar, BC$,$ of length $2$L is pinned to AB at B and vertical down to an incline plane connecting points A and C$.$

Use:

$0\mathrm{.}47$ m

g $=9\mathrm{.}81$ m$/$s$2$

What is the angular velocity of bar AB to $2$ decimal places?