Stretching rubber
Lesson 9 / 10
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Lesson outcome
I can investigate the extension of a rubber band, and compare the behaviour to that of a spring.
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A rubber band is elastic because it returns to its original length when a force is removed.
The extension of a rubber band increases different amounts for each equal sized increase in force.
The extension of a spring is not directly proportional to the force applied.
The extension pattern is explained by the behaviour of molecular chains in the rubber.
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