This dynamic trolley pair is an excellent tool to study forces, motion and friction. These carts have a single piece body which is virtually un-breakable. They are excellent upgrades for the traditional wooden or metallic ones and its unique design allows many precision dynamic experiments to be carried out. The cart’s plastic body is mounted on a set of 3 low friction nylon wheels providing a straight distance over long distances. The lockable spring loaded plunge has 2 levels of spring compression and is activated by a trigger knob on top of the trolley. A cushioned surface mounted on top of each cart enables placing of additional masses for increasing the effective weight of the cart. The cart can also be stacked on top of each other. Velcro pads are pasted at the back end of each cart enabling study of inelastic collision. Each trolley measures 30.5 (L) x 13 (W) x 18.5 (H)cm.
