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never heard of a negative modulus. Some special class polymers have negative Poisson ratio so when you pull on it gets wider inserted of narrower, but I know of none that get shorter when you pull on it

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Q: Which material have negative modulus of elasticity?
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Related questions

What is the coefficient of a material's elasticity called?

Young's Modulus


What are the significance of modulus of elasticity and modulus of rigidity in machine design?

IN MACHINE design modulus of elasticity place an important role. from the value of modolus of elasticity we come to know about maximum value of load that can be to the given material upto which the material is assume to follow the hook's law.


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Is there any effect of temperature on young's modulus of a meterial?

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The value of the Young's Modulus of Elasticity, which is an inherent property of the material


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