Question

A simple harmonic oscillator in the physics lab is measured to have an amplitude of 150.00 cm and a maximum speed of 360.0 cm/s. What is its speed when the displacement is 3.60 cm?

Answer 1

y = A sin wt , so y = 150 sin wt

3.60 = 150 sin wt gives you wt

v = w A cos wt
vmax = wA = 360

v = 360 cos wt, where you found wt above.

Answer 2

I am posting from another account now (the other account was my friend). I had the right idea for this, but how do you go about finding w from the information given?

Answer 3

Don't need w, get wt from the second line of my post

sin (wt) = 3.60/150 = 0.024, wt = 1.38 o

v = 360 cos(1.38) = 360