You will be provided a simple pendulum
and can measure its length **L**.
Set up the experiment so that the rod is at the height **h = L/4**.
Start the ball at the distance
**D** above the bottom of the swing
which you predicted in part I.

Does your predicted value succeed?

Experiment to find the critical value of **D** --
the smallest possible height which still allows the ball
to complete its circle around the peg.
What is this critical value?
How close is it to your predicted value of **D**?
Estimate the uncertainty in this critical value;
does it agree with your prediction, to within the uncertainty?

Copyright © Michael Richmond. This work is licensed under a Creative Commons License.