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2.1 ­ Fluids and Flow.

A fluid is defined as any substance that can flow. This is usually a gas or a liquid as solids made of tiny particles can flow.

Density is a measure of the mass per unit volume of a material and measured in kg m3. The…

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2.2 Solid Materials

Hooke's Law states that the force a spring exerts is directly proportional to the amount at which it is extended. The amount of force is exerts is
dependant on the spring and is known as the spring constant (k). Therefore:

Where x is the extension.

This only…

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Material A is stronger than material B because it requires more force to break it.

Material A is stiffer than material B as it has a higher gradient indicating a high young's modulus.

Material B is more ductile than A as it shows plastic deformation.

Material A is more brittle…

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Features of a stress/strain graph




Good quick notes. Useful to read before exam

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