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37 Cards in this Set
- Front
- Back
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0 |
J |
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1 |
A |
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2 |
B |
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3 |
C |
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4 |
D |
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5 |
E |
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6 |
F |
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7 |
G |
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8 |
H |
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9 |
I |
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Fulcrum |
Effort x effort distance = resistance distance (Force needed x length on force side = weight needing moving x length on weight side) |
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Pulley (MA) |
Resistance (weight) / effort (Weight divided by amount of effort needed to lift it) |
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Pulley (work) |
Effort = weight (resistance )/MA |
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Pulleys (working length) |
Length of pull = height(lift) x MA |
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Incline Plane (MA) |
Effort distance / resistance distance (Length of ramp divided by height of ramp) |
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Incline Plane ( work) |
Effort x effort distance = resistance x resistance distance |
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Circumference |
Definision: Parimeter of circle Pi (3.1416) x diameter |
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Wheel (work) |
Force x circumference (bigger wheel) =resistance x circumference of smaller wheel (Force needed to turn wheel x circumference of bigger wheel = weight of object being moved x circumference of smaller wheel) |
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Wheel (MA) |
Resistance (weight ) / force (effort) |
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Screw (MA) |
Circumference of head/ pitch |
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Screw (work ) |
Weight / effort (force) = MA |
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Drive gear twice as big as driven gear |
1/2 torque/twice speed |
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Drive gear 1/2 size of driven gear |
2x torque/1/2 speed |
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Gear (MA) |
Drivin gear = Drive gear x drive teeth/driven teeth |
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Fraction (+/-) |
Must have a common denominator |
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Fractions (multiplication ) |
Multiply numerators and denominators |
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Fractions (division) |
Reverse denominators and numerators to the right and multiply |
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Decimals (+/-) |
Decimal point drops straight down |
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Decimal (multiplication ) |
Complete multiplication as whole numbers then place decimal point over total number of places as all numbers. |
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Decimal (division) |
Move both decimal places until outside number is whole, divide leaving inside decimal point in same place |
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Percentage |
Same way as grades. Small divided by large. Don't forget the 1, 5, 10, 25, 50 trick |
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Ratios |
Cross multiply then solve for x |
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Radius |
Defined: halfway through circle |
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Diameter |
Definision: distance from one side of circle to other while passing through center. |
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Volume: Sphere |
4/3 x pi x r^3 |
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Volume: cylinder |
Pi x r^2 x hight |
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Right Triangle |
A^2+B^2=C^2 |
