A simple pendulum is constituted by a point mass m = 30 g suspended by an inextensible flexible wire of length l = 50 cm (the mass of the wire is negligible).

(a) Evaluate the period of oscillation of the pendulum

(b) Knowing that the pendulum is brought to an initial angle = 4 with respect to its vertical equilibrium position, and then its released with an initial velocity equal to zero, write down the equation of motion ((t))