Hall'S Car, Single, Can Be Used With An Inclined Plane, Weights, And Pulleys To Study Relationship Between Energy And Work. It Features A Molded One-Piece Body With A Central Well To Hold Additional Masses, Molded Wheels Have Sleeve Bearings
Air Puck, perfectly balanced and glides on a cushion of air for nearly frictionless motion across any smooth surface. Sturdy bumpers will survive collisions with walls, shoes, or other Air Pucks.
Hall'S Carriage, One-Piece Aluminum Wheels And Axles Mounted In Cone Bearings, For Dynamics Experiments, For Low Friction Operation. One Piece Plastic Body With Facility To Add Weights On The Top. Used With Inclined Planes, Size 13.5 X 7 X 3.5 Cm