A particle executes simple harmonic motion about the point x = 0. At time t = 0 it has displacement x = 2 cm and zero velocity. If the frequency of motion is 0.25 sec-1 , find
(a) The period,
(b) angular frequency,
(c) the amplitude,
(d) maximum speed,
(e) the displacement at t = 3 sec and
(f) the velocity at t = 3 sec