Does the weight of a lever influences the amplification?

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SUMMARY

The discussion centers on the influence of lever body weight and material on force amplification, specifically referencing the law of the lever. It concludes that while the weight and material of the lever body may affect mechanics, they do not alter the mechanical advantage, which is solely determined by the ratio of the lever arms. The question posed about the weight of a 30-meter lever made from carbon nanotubes highlights the distinction between mechanical advantage and the effects of lever weight.

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  • Familiarity with carbon nanotube applications in engineering
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Engineers, physics students, and anyone interested in mechanical systems and the principles of force amplification through levers.

Dante Meira
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According to Wikipedia:

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.

My question is: does the material that the body of a lever is made of, or the weight of the body of the lever, influences the "force amplification" achieved, as long as it is a rigid material?

Or only the ratio between the "arms" of the lever influences the "force amplification", regardless of the material that the body of the lever is made of, and of how much the body of the lever weighs?

Sorry if this question sounds strange, I was just wondering how much would weigh the arm of a lever that is 30 meters long, if it was made of some ultralight rigid material based on carbon nanotubes...
 
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The weigh of the lever will of course affect the mechanics, but it does not, strictly speaking, change the mechanical advantage. It is a separate effect.
 

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