A simple pendulum with mass m = 1.5 kg and length L = 2.41 m hangs from the ceiling. It is pulled back to an small angle of θ = 9.2° from the vertical and released at t = 0.
1. What is the angular displacement at t = 3.58s? (give the answer as a negative angle if the angle is to the left of the vertical).
2. What is the magnitude of the radial acceleration as the pendulum passes through the equilibrium point?