Khan Academy on a Stick
Harmonic Motion Part 3 (no calculus)
Figuring out the period, frequency, and amplitude of the harmonic motion of a mass attached to a spring.
If the above player doesn't work, you can try this direct link.
Figuring out the period, frequency, and amplitude of the harmonic motion of a mass attached to a spring.
If the above player doesn't work, you can try this direct link.