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Elliot's class 1 lever
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*Jasons* What is the Efficiency?
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MECHANICAL EFFICIENCY
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Examples and Formulas
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How to Improve your Mechanical Efficiency
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Practice Questions (Hard)
1. A person exerts 35N of force on a suitcase and moves it up a ramp of 6 metres. If the mechanical efficiency is 50% what is the work output?
2. A painter moves a 50N paint bucket to a height of 3 metres using a lever. If he moved the lever 5 metres and the mechanical efficiency was 75% what was the force he exerted on the lever?
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Home Page | Examples and Formulas | How to Improve your Mechanical Efficiency | Practice Questions| Practice Question Answers | Bibliography
Practice Questions (Hard)
1. A person exerts 35N of force on a suitcase and moves it up a ramp of 6 metres. If the mechanical efficiency is 50% what is the work output?
2. A painter moves a 50N paint bucket to a height of 3 metres using a lever. If he moved the lever 5 metres and the mechanical efficiency was 75% what was the force he exerted on the lever?