Sine Wave 2 - The Simple Pendulum

Observe that the pendulum slows down towards the end of each stroke before stopping. It reaches maximum speed in the halfway through each stroke. It is not surprising then that the formula for the force on the bob on the end of the pendulum is:

Another device with a motion the slows down and stops at the end of each stroke is a pitch fork. However, it moves so fast it makes a sound. So what would the sine wave for a sound look like?
Proceed to Sine Wave Tutorial 3