Product dimension (L*W CM): 120*10.5
Inner packs dimension (L*W*H CM): 127*9*14

It is used to do experiments, such as: to study the inertia of object, to demonstrate gravitational potential energy of object, to study the relationship between the force condition of object on the inclined plane and inclination of inclined plane, and to study static friction, sliding friction and rolling friction; combining with electromagnetic type electric timer to study law of uniform velocity motion, to measure acceleration of gravity and to verify the experiment of law of conservation of mechanical energy. It consists of inclined plate, base plate, trolley weight barrel, support bar friction block and pulley support.