engineering equations
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shapes that are learnt in gcse maths are NOT included.
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12 Terms
1
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density (kg/m^3)
mass(kg)/volume(m^3)
2
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Stress(N/m^2, Pa)
force (newtons) / cross sectional area (m^2)
3
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strain
change in length x length
4
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youngs modulus
stress/strain
5
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Pressure
Force / Area
6
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factor of safety
yield stress/load
7
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ohms law
voltage = current x resistance
8
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total resistance in series
add up value of all resistors
9
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total resistance in parallel
sum of 1/ each resistor in parallel
10
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gear ratio
number of teeth on driven gear / number of teeth on driver gear
11
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velocity ratio
size of output wheel / size of input wheel
12
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mechanical advantage
load / effort.
Note 
Flashcards (42)