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15 Cards in this Set
- Front
- Back
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Simple levers formula
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Effort x Effort distance = Resistance x Resistance Distance
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What is the resistance distance in a lever system with the fulcrum in the end.
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Resistance distance = Effort distance / 2
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Mechanical advantage in a pulley system.
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MA = number of cables equally supporting the weight.
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Mechanical Advantage of an Incline plane
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Length of incline / height
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Formula for Effort in a pulley system
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E = weight or resistance / mechanical advantage
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Formula for the Length of pull in a pulley system
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Length = Heigth * Mechanical Advantage
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Formula for an Inclined plane
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Effort * Distance of incline = Resistance * Height
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Formula for a Crank and axle
Formula for circumference |
Effort * Circumference of handle = Resistance * Circumference of axle
Circumference = Pi*2*Radius or Pi*Diameter |
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Mechanical Advantage of a Screw
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Circumference of screw / pitch
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Add and Subtract fractions
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Find common denominator the add numerator
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Multiply fractions
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Multiply straight across
= product of numerator / product of denominator |
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Divide fractions
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Cross multiply
= numerator * reciprocal of the denominator |
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Multiplying decimals
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Treat as whole numbers the place the decimal the same number places as the total of the two numbers.
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Area of
Rectangle Square Triangle Circle Circumference of Circle |
R = H*W
S = W^2 R = (B*H)/2 C = Pi*R^2 C = Pi*2*R or Pi*D |
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Volume of
Rectangle Square Circle Cylnder |
R=L*W*H
S=Side^3 C=4/3 *Pi*R^3 Cyn=Pi*2R^2 *H |
