The small pendulum of mass m is suspended from a trolley which runs on a horizontal rail...

The small pendulum of mass m is suspended from a trolley which runs on a horizontal rail. The trolley and pendulum are initially at rest with θ = 0. If the trolley is given a constant acceleration a = g, determine the maximum angle θ_max through which the pendulum swings. Also find the tension T in the cord in terms of θ.