Question

A certain lever system is only 30% efficient. The following changes are considered:
Change 1: use a stiffer lever to reduce energy list bending the lever
Change 2: make a longer lever that will require less force
What could make it more efficient?

Answer 1

Change 2 would likely make the lever system more efficient. By using a longer lever that requires less force, less energy would be lost in the bending of the lever, resulting in a higher overall efficiency.