High Road Low Road
Two balls race – one down a slight incline and the other down the same incline but including a valley. Device with the orange flag shows the winner. Use wood block to launch balls equally.
Clamp rod about 16cm above table for good results.
Location: H1-1 (hanging) plus stand and clamp. Styrofoam catch bucket (replaces plastic bucket in photo) is on H1-1. Steel balls are in DE-8, drawer 2 52. Board to support set-up is propped against wall to the right of the classroom turntable (under slide rule).