Acceleration Line Trolley, 1 Each

The United Scientific® Acceleration Line Trolley by United Scientific is a physics teaching apparatus that runs a 6″ x 3.5″ trolley down a 30-foot cable with steel spring clamps, so students can measure how incline angle affects acceleration. Holes for hanging weights (100 g to 250 g recommended, not included) let students vary mass, and an index card on the top bar works with a photogate. Used in high school and college physics labs.