In a contraption built by a fraternity, a person sits at the center of a swinging platform...

In a contraption built by a fraternity, a person sits at the center of a swinging platform with mass m = 400 kg and length L = 4 m suspended via two identical arms of length H = 3 m.

Figure P8.22

Neglecting the mass of the arms and of the person, neglecting friction, and assuming that the platform is released from rest when θ = 180°, compute the speed of the person as a function θ for 0° ≤ θ ≤ 180°. In addition, find the speed of the person for θ = 0°.