Demonstrate acceleration due to gravity. This
classic demo is always a winner!
Dramatically demonstrate a concept that is
critical for understanding projectile motion. Two balls are mounted on the
apparatus. When triggered they demonstrate the independence of horizontal and
vertical components of projectile motion. When you release the spring, one is
dropped directly down while the other is projected horizontally. Your students
will hear that both balls hit the floor at the same time!
Lab stand and clamp are required.