A particle executes simple harmonic motion with frequency 5.0Hz. Its displacement from equilibrium is measured along the y–axis.
(a) At t=0 the displacement is 0.030m.
(b) At t=0.020s the displacement is 0.010m.
(i) Calculate the amplitude A of the motion.
(ii) Determine the initial phase ϕ of the motion (in radians).
(iii) Find the displacement of the particle at t=0.050s.