Changes to make in procedure

If the rubber bands you have available require more force to stretch than the two #16 rubber bands, then the Force Probe will buckle more readily.  You may compensate for this in two ways:
  1. Link rubber bands together until they hang down nearly to the bottom of the vertical base, then connect the rivet to the base so the lever arm angles slightly upwards.
  2. Shorten the distance from the point you grasp the Force Probe to the end where it pushes the lever arm.

Unit Lessons