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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 (Medium)
1. A person wants to move a 120N fridge to a height of 3 metres. He uses 55N to move it through a distance of 10 metres to make the task easier. What is the efficiency of the this machine?
2. A teacher wants to lift a 38N box of books to the top of a bookshelf that was 1.5 metres tall. The teacher uses a ramp to get the box up using 22N of force through a distance of 6 metres. What is the mechanical efficiency?
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Home Page | Examples and Formulas | How to Improve your Mechanical Efficiency | Practice Questions| Practice Question Answers | Bibliography
Practice Questions (Medium)
1. A person wants to move a 120N fridge to a height of 3 metres. He uses 55N to move it through a distance of 10 metres to make the task easier. What is the efficiency of the this machine?
2. A teacher wants to lift a 38N box of books to the top of a bookshelf that was 1.5 metres tall. The teacher uses a ramp to get the box up using 22N of force through a distance of 6 metres. What is the mechanical efficiency?