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20 Cards in this Set
- Front
- Back
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A force being applied on an object so that the object is moved
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work
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the formula for work
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w = f x d
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a push or pull
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force
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the ability to do work
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energy
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devices composed of 1or 2 parts that make work easier
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simple machines
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a rigid bar capable of turning about a fixed point
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lever
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formula for Law of Moments
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w1 d1=w2 d2
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the distance from the effort to the fulcrum
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effort arm
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the distance from the resistance to the fulcrum
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resistance arm
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a lever in which the fulcrum is located between the effort and the resistance
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1st Class Lever
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the resistance is located between the fulcrum and the effort
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2nd Class Lever
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the effort is located between the fulcrum and the resistance
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3rd Class Lever
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the amount a machine magnifies the effort
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mechanical advantage
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used for to move objects over long distances
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the wheel and axle
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used to change thedierction of the effort
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the pulley
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used to build pyramids(ramps)
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inclined planes
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2 inclined planes placed bottom to bottom or back to back
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wedges
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an inclined plane wrapped around a cylinder or a cone
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screws
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is the rate of doing work
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power
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the unit for power
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watt
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