Simple Machines

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20 Terms

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Lever

A rigid bar that is free to move around a fixed point

<p>A rigid bar that is free to move around a fixed point</p>
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Fulcrum

The fixed point around which a lever pivots

<p>The fixed point around which a lever pivots</p>
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Inclined Plane

A slanted surface along which a force moves an object to a different elevation

<p>A slanted surface along which a force moves an object to a different elevation</p>
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Wedge

A device that is thick at one end and tapers to a thin edge at the other end.

<p>A device that is thick at one end and tapers to a thin edge at the other end.</p>
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Pulley

A simple machine that consists of a rope that fits into a groove in a wheel

<p>A simple machine that consists of a rope that fits into a groove in a wheel</p>
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Screw

A simple machine that consists of an inclined plane wrapped around a cylinder

<p>A simple machine that consists of an inclined plane wrapped around a cylinder</p>
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Work

Force exerted on an object that causes it to move

<p>Force exerted on an object that causes it to move</p>
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Unit for Work

Joules (J)

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Wheel and Axle

A simple machine consisting of two circular objects of different sizes; the wheel is the larger of the two circular objects

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Wheel and Axle Examples

Door knob, steering wheel, bike

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1st Class Lever

The fulcrum is positioned between the effort and resistance

<p>The fulcrum is positioned between the effort and resistance</p>
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2nd Class Lever

The load is between the fulcrum and the effort

<p>The load is between the fulcrum and the effort</p>
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3rd Class Lever

The fulcrum is at one end of the bar and the effort is between the fulcrum and the resistance

<p>The fulcrum is at one end of the bar and the effort is between the fulcrum and the resistance</p>
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Inclined Plane Examples

Ramps, Hills, Wedge, Chisels, Hatchets, Door Stop

<p>Ramps, Hills, Wedge, Chisels, Hatchets, Door Stop</p>
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Wedge Examples

Shovel, Knife, Axe, Scissors, Ice Pick, Pins, Needles

<p>Shovel, Knife, Axe, Scissors, Ice Pick, Pins, Needles</p>
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Pulley Examples

Elevators, Cargo Lift, Claw Machines, Flag Pole Pulley

<p>Elevators, Cargo Lift, Claw Machines, Flag Pole Pulley</p>
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Screw Examples

Jar lid, drill, bolt, faucets, bottle caps, light bulbs

<p>Jar lid, drill, bolt, faucets, bottle caps, light bulbs</p>
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Lever Examples

Crowbar, Hammer, Teeter Totter, Tweezers

<p>Crowbar, Hammer, Teeter Totter, Tweezers</p>
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Simple Machine

A machine that does work with only one movement of the machine

<p>A machine that does work with only one movement of the machine</p>
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Machine

A device that makes work easier