Calculating Stress Applied to Rubber Band: 1.0 MPa/ unit Strain

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SUMMARY

The discussion centers on calculating the stress applied to a rubber band, specifically noting that rubber exhibits a stress of 1.0 MPa per unit strain. The formula for stress, defined as Stress = Force/Area, is referenced, but the conclusion indicates that without additional information, such as the modulus of elasticity or the specific dimensions of the rubber band, the calculation cannot yield a definitive answer. The confusion arises from the mention of an answer of 2.0 x 10^6 Pa, which is attributed to a lack of necessary data in the problem statement.

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Nubcake
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Rubber has roughly a stress of 1.0 MPa per unit strain . how much stress has been applied to the rubber band?



Stress = f/a



though it was straight forward and used the formula for stress but when I looked at the answer it was 2.0 x 10^6 Pa But why?
 
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Your problem statement is missing info. It is just telling you what the E modulus is...stress over strain...or the stress in the rubber when it has extended to twice its original length. There can be no answer to the value of the stress without more data being given.
 

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