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11 Cards in this Set
- Front
- Back
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The _____ and ____ can be thought of as a circular lever.
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wheel and axle
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Examples of wheel and axle are:
1 2 |
1. steering wheel
2. screwdriver |
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A ____ is a simple machine consists of a grooved wheel over which a rope of cable passes.
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pulley
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Name the three arrrangements of pulleys:
1 2 3 |
1. fixed pulley - do not move
2. movable pulley-moves with the resistance 3. block and tackle - combination of fixed and movable pulleys |
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An ___ __ is a sloping platform that allows us to move objects to higher places without lifting them.
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inclined plane
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The ____ is a special form of inclined plane.
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wedge
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___ and ___ are examples of wedges.
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chisels and axes
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A __ is another special form of an inclined plane.
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screw
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A _____ can be visualized as an inclined plane wrapped around a rod.
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screw
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The distance between the ridges on a screw is called the _____.
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pitch
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Why are no machines 100% efficient?
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Because there will always be a certain amount of friction.
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