ISA on force and extension

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  • Created by: Hatty
  • Created on: 04-12-12 20:10

Do your results support the hypothesis?

My results support my hypothesis because although they are not directionally proportionate, there is a positive linear correlation between the force and extension. For example, adding a 1 Newton force to the band causes an approximate extension of 22mm each time. The greater the force, the greater the extension.

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Did you get any anomalous results?

Statistically, I did not receive any anomalous results because they all had a similar correlation between force and extension. However due to flaws in plotting of my graph and line of best fit, I did have one result which appears to have an irregular relationship between x and y axis, as it has a significant displacement within the line of best fit.

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How could you obtain more accurate results?

A mean average should be calculated. Firstly all anomalies should be disregarded. Then, all the data for each independent variable should be added together and divided by how many pieces of data was added together.

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How could your results be useful in context?

They may be useful by using the same investigation method in working out safety issues for bungee jumping for example to calculate the maximum force before the bungee reaches it’s elastic limit, or extension over a certain length meaning the jumper may hit the floor and injure themselves. From my investigation, I suspect adding a force much over 4/5 Newtons would have snapped the elastic band; the same can be conclusion can be discovered if the investigation were to be put into context of bungee jumping (with a much greater force for the person and a thicker, and sturdier elasticised object as oppose to a rubber band)

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