• Center of mass demonstration
• Apparatus comprises of a wooden A from with diverging rails and a double ended cone
• Easy use, place cone of the bottom of the ramp and let go
• Constructed of durable wood and clear coated for decades of use.
• Comes assembled

This is a great toy, executive gift, or physics demonstration as the cone appears to be traveling "Up" the ramp. The physics behind the demonstration is that as the double-ended cone moves up the ramp the center of mass is actually moving downward which drives the cone up the ramp itself. Amaze your students and colleagues.   43cm long.