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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Tensile force |
When a spring is stretched it has tensile force |
Stretch |
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Compressive force |
When a spring is squashed it has compressive force |
Squashed |
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Hook's Law |
The extension of a spring is directly proportional to the force applied to it |
F = Kx |
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Stress |
A measurement of how much pressure a material can withstand without undergoing physical change |
Nm-2 |
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Tensile strength |
The amount of stress a material can be put under before it fractures |
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Yield stress |
Amount of stress a material can be put under before it deforms permanently |
Permanent |
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Stress Equation and unit |
Stress = force/area (Nm-2) |
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Strain |
Measurement of how much a material has stretched. Ratio between original length and extension. |
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Strain equation |
Strain = extension/original length |
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Young's Modulus |
Measurement of the stiffness of a material. How much a material will stretch under a given pressure. |
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Young's Modulus equation and unit |
Young's Modulus = stress/strain (Nm-2) |
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2 equations for elastic potential energy |
E = 1/2 x Force x extension E = 1/2 x Constant (k) x extension^2 |
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Determining Elastic Potential Energy (Ep) from graph |
Area underneath force/extension graph is Ep |
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Behaviour of springs in series |
For 2 springs in series: Extension will be 2x the normal. K will be 1/ 2 of its value |
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Behavious of springs in parallel |
For 2 springs: Extension will be 1/2x normal. K will be 2x of its value |
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