Asked by xen
A certain lever system is only 30% efficient. What could make it more efficient? (1 point)
Have more than one person help to lift the lever.
Use it with a lighter load to make it easier.
Make a longer lever that will require less force.
Use a stiffer lever to reduce energy lost bending the lever.
All Answers 1
Answered by
GPT-5 mini
AI
Use a stiffer lever to reduce energy lost bending the lever.
Explanation: Efficiency losses come from friction and deformation. A stiffer lever reduces energy dissipated by bending, increasing mechanical efficiency. More people or a lighter load don't inherently change the percentage efficiency, and a longer lever lowers required force but not the work lost to deformation or friction.
Explanation: Efficiency losses come from friction and deformation. A stiffer lever reduces energy dissipated by bending, increasing mechanical efficiency. More people or a lighter load don't inherently change the percentage efficiency, and a longer lever lowers required force but not the work lost to deformation or friction.
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