A mass of 2 kg oscillating in simple harmonic motion has a maximum displacement of 20 mm and a time period of 1.57 s. At time t = 0, the displacement is 0. Then the acceleration is
1
−0.32 Sin (4t)
2
−0.02 Cos (4t)
3
−0.32 Cos (4t)
4
None of the above