Balls of equal and unequal mass on strings, separated by a leaf spring.
1N20.30 • A+35+0
Spring with Reaction Weights. Springs between the suspended balls are held compressed by loops of thread. To release the spring, a match is used to burn the thread.
Usage
Fall 2012 - Summer 2026
110
reservations across 6
classes
Related Demos
A+35+2 Two people in rolling chairs pushing and pulling A+35+5 Elastic collisions: Seven steel balls roll on a wooden track. A+35+10 Elastic collisions: Five hanging balls and two unequal hanging balls. A+35+16 .22 rifle fires vertically, bullet lifts small wood cylinder. A+35+17 Ballistic pendulum: Suspended .22 rifle fires into suspended block. A+35+18 Inelastic collisions: Another ballistic pendulum. A+35+20 Three meter airtrack with gliders that rebound elastically, or stick. A+35+25 Plastic pucks on air table. A+35+28 Executive size pool table A+35+30 Mechanical model of a gas: Vibrating balls strike piston on OHP. A+35+35 Airtrack: Long track with two gliders coupled by a spring hoop. A+35+40 Train on circular track moves one way and track moves the other. A+35+45 Film loop: "Colliding freight cars", 2:45 min. A+35+50 Film loop: "Dynamics of a billiard ball", 4:00 min. A+35+55 Applet: Collision Lab