Question

using levers to measure ke in the example pictured, the soda bottle would act as the effort resistance fulcrum

Explanation:

In a lever system, the effort is the force applied to move the lever, the resistance is the load being moved, and the fulcrum is the pivot point. Here, the soda bottle is the force (effort) that causes the lever to move the beanbag (resistance), with the cylinder as the fulcrum. So the soda bottle acts as the effort.

Answer:

effort