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Cards In This Set
| Front | Back |
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What is the simplest machine?
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Levers such as a seesaw
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What is a first class lever?
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 Where the fulcrum is located between the effort and resistance |
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What is a second class lever?
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 Where the fulcrum is located at one end and the effort is applied at the other end with the resistance somewhere in between. |
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What is a third class lever?
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 Where the fulcrum is at one end and the effort and resistance to be overcame is at the other end- with the effort applied at some point in between |
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First and Second class levers can provide a positive or negative mechanical advantage?
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Positive
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What is the formula for Mechanical Advantage (M.A)?
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M.A = R/E
Mechanical Advantage = Resistance / Effort |
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What is a Micrometer?
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An instrument for measuring accurately dimensions or separations.
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What are Spur Gears?
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Wheels with mating teeth cut in their surfaces so that they can turn the other without slippage
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What are Helical Spur Gears?
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Gears that are cut slantwise across the working face of the gear.
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What are Beveled Gears?
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Gears that are angled and connect shafts lying at any given angle
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What is the mathematical formula for work?
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Work = Force x Feet so..... Foot-pounds = pounds x feet
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What is Friction?
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The resistance that one surface offers in order to move another
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What is Power?
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The rate of doing work
so.... Power = Work / Time |
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What is used to measure Pressure?
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Bourbon Gage
(commonly measured in PSI) |
