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13 Cards in this Set
- Front
- Back
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Work
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the transfer of energy that occurs when a force makes an object move
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Machine
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a device that makes doing work easier
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Effort force
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the force applied to a machine
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Resistance force
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the force applied by the machine to overcome resistance
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Mechanical Advantage (MA)
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the number of times the machine multiplies the effort force
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Efficiency
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how much of the work put into the machine is changed into useful output work by the machine
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Simple machine
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a machine that does work with only one movement
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Lever
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a bar that is free to pivot, or turn, about a fixed point
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Pulley
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a grooved wheel with a cable, rope, or chain running along the groove
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Wheel and axle
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a machine consisting of two wheels of different sizes that rotate together
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Inclined plane
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a sloping surface that reduces the amount of work required
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Wedge
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an inclined plane with one or two sloping sides
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Compound Machine
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when two or more simple machines are used together
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