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Forces in action (Forces and Elasticity (To change the shape of an object,…
Forces in action
Forces and Elasticity
To change the shape of an object, more than one force must be applied e.g a spring must be pulled from both ends
If the object returns to its original shape after the forces are removed, it was elastically deformed
If the object doesn't return to its original shape, it has been inelastically deformed
The extension of an elastic object (or the compression) is directly proportional to the applied force i.e they have a liner relationship.
However once the limit of proportionality has been exceeded:
~ Doubling the force will not double the extension
~ The relationship becomes non-linear
~A force-extension graph graph will stop being a straight line.
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The spring constant indicates how easy it is to stretch or compress the spring - the higher the spring constant the stiffer the spring
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The amount of work done and the energy stored are equal, provided the spring does not go past the limit of proportionality.
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