Three rods and two identical thin plates are welded together to form the shape shown. If the

assembly is released from rest at the position shown, find its angular acceleration $$ knowing

that:

The mass of rodAB$(m_{AB})$ is equal to $2kg$

The mass of rodBC$(m_{BC})$ is equal to $6kg$

The mass of rodDE$(m_{DE})$ is equal to $2kg$

The mass of each thin plate $(m_p)$ is equal to $10kg$