Problem

The system shown lies in the vertical plane. The trolley A is moving to the right with a c...

The system shown lies in the vertical plane. The trolley A is moving to the right with a constant acceleration aA. Attached to the trolley is a rope AB of negligible mass. Attached to the end of the rope is a T-bar consisting of two thin uniform bars BC and DE, each of which has length L and mass m (bar BC is attached at the midpoint of bar DE). When the trolley A is accelerating at constant aA, the angles θ and ϕ are both constant. Determine these two constant angles in this steady state. Note that cos. and the mass center of the T-bar is at G.