Complete Free Fall Apparatus with Timer

  A big improvement over the free fall apparatus with two photogates, the addition of a third gate expands the available applications and allows students to study motion more conveniently and accurately. The apparatus comes complete with an electromagenet launcher, three wired photogates, two steel balls, a plumb, and a catcher. A cast iron tripod base attached to the unit adds stability, and the digital timer is specially designed to measure the acceleration caused by gravity.

   The digital timer has been combined with the power/control unit, and should be used exclusively with the free fall apparatus. Its single connector jack and one-touch buttons make it extremely easy to set up and use, with different time intervals being shown on the 4-digit display. A toggle switch on the electromagenetic launcher can release the metal ball at the top of the free fall apparatus, or hold it in place.