The equation of motion for an oscillator is given by y= (0.200cm)sin (140t). What are the 1)alplitude, 2)period, and 3) frequency of this motion?

Question

The equation of motion for an oscillator is given by y= (0.200cm)sin (140t). What are the 1)alplitude, 2)period, and  3) frequency of this motion?

drwls · Answer

y = (Amplitude)*sin(2 pi f t), therefore Amplitude = 0.200 cm Frequency (f) = 140/(2 pi) = 22.3 Hz Period P = 1/f = 0.0449 s