Pendulum Painting

via design verb

Mix science with art and create a pendulum painting! Make a pvc table frame or suspend from a tree outside. Then, link a plastic cup (with a hole punched in the bottom) to your frame to swing. 

Science: "A gravity pendulum is a weight on the end of a rigid or flexible line or rod, which, when given some initial lift from the vertical position, will swing back and forth under the influence of gravity over its central (lowest) point. The movement of an ideal pendulum can be described mathematically as simple harmonic motion." via Encyclopedia Kids