### Maximum velocity of a mass on a spring vibrating up and down

Suppose a mass on a spring is vibrating up and down with amplitude of 5.0 cm and a frequency of 0.80 Hz. (A) What is the angular speed w of the system? (B) Describe the motion of the mass in the form y = A sin (wt) (In other words, put in the values for A and w) (C) What is the maximum velocity of the mass, and