practice

1. Write something.
2. Write something else.
3. Write something different.
4. Write something completely different.

conceptual

1. An object swings from the end of a cord as a simple pendulum with period T. An identical object oscillates up and down on the end of a vertical spring with the same period T. If the masses of both objects are doubled, how will the new values of the periods (call them T_p and T_s) compare to T?

worksheets

1. trajectories-pendulum.pdf
   The drawings on the accompanying pdf worksheet show a pendulum as it swings from left to right. A pair of scissors is used to cut the string cleanly and instantly at four different positions. Sketch the subsequent trajectory of the mass until it lands on the ground.