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A particular human hair has a Young's modulus of 3.77×109 N/m2and a diameter of 146 μm. If...

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Physics

A particular human hair has a Young's modulus of 3.77×109N/m2and a diameter of 146 μm.

If a 256 g object is suspended by the single strand of hair thatis originally 15.5 cmlong, by how much ΔL hair

will the hair stretch?

If the same object were hung from an aluminum wire of the samedimensions as the hair, by how much ΔLAl

would the aluminum stretch?

If the strand of hair is modeled as a spring, what is its springconstant khair?

Answer & Explanation Solved by verified expert
4.2 Ratings (559 Votes)
GivenYoungs Modulus Y 377 109Nm2The diameter d 146 m 146 106 mSo radius r    See Answer
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