Show how the rate of acceleration of an object depends upon the angle of incline. Our aluminum trolley has two low-friction pulleys to ride along the wire cable fastened to a wall. There are three holes in the trolley for attaching weights and brackets for placing the trolley at any point along the cable. Includes: trolley with 50 mm diameter pulleys; 1.5 m wire cable; attachment kit with hardware; instructions for installation; calculations. Weight 1 lb.