2 The motion of an oscillating flywheel is defined by the relation θ = θ0e–3πt cos 4πt, where θ is expressed in radians and t in seconds. Knowing that θ0 = 0.5 rad, determine the angular coordinate, the angular velocity, and the angular acceleration of the flywheel when (a) t = 0, (b) t = 0.125 s