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15 Cards in this Set
- Front
- Back
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Compound Machine |
machine that is a combination of 2 or more simple machines |
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Efficiency |
ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage |
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Inclined Plane |
simple machine that consists of a sloping surface, such as a ramp, that reduces the amount of force needed to lift something by increasing the distance over which the force is applied |
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Input Force |
force applied to the machine |
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Lever |
simple machine consisting of a bar free to pivot about a fixed point called a fulcrum |
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Machine |
device that makes doing work easier by increasing the force applied to an object, changing the direction of an applied force, or increasing the distance over which a force can be applied |
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Mechanical Advantage (MA) |
ratio of the output force exerted by a machine to the input force applied to the machine |
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Output Force |
force applied by the machine |
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Power |
amount of work done, or the amount of energy transferred, divided by the time required to do the work or transfer the energy; measured in watts (W) |
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Pulley |
simple machine that consists of a grooved wheel with a rope, chain, or cable, running along the groove; can be either fixed or movable |
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Screw |
simple machine that consists of an inclined plane wrapped in a spiral around a cylindrical post |
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Simple Machine |
machine that does work with only 1 movement lever, pulley, wheel & axle, inclined plane, screw, & wedge |
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Wedge |
simple machine that is an inclined plane with 1 or 2 sloping sides |
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Wheel & Axle |
simple machine that consists of a shaft or axle attached to the center of a larger wheel, so that the shaft and the wheel rotate together |
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Work |
transfer of energy that occurs when a force makes an object move; measured in joules (J) |
