Simple machine intro

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Force A push or pull that can change the way something moves

description

Introduction PPT to Simple Machines

Transcript of Simple machine intro

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ForceA push or pull that can change the way

something moves

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Simple Machine

A tool that uses force to make work easier.

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Inclined planeA simple machine with a flat surface whose endpoints are at different

heights.

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effortThe total Work

done to achieve an outcome

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LeverA stiff bar that moves freely around a

fixed point.

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fulcrumThe pivot point

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Class one lever

when the fulcrum is flanked by the effort and the load

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Class Two lever

the load in the middle of the fulcrum and the effort

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Class three lever

the effort lies between the load and fulcrum

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wedgetwo inclined planes in a v-

shape

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Outward force

Push outward

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Downward force

Push down

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screw

An inclined plane wrapped around a column

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shaft

The long part of the screw

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head

The top of the screw

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pulley

A rope fitted around the rim of a fixed wheel.

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Fixed pulley

The wheel does not move, making the effort force change direction

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Moveable pulley

This type of pulley increases the force’s size. By pulling a rope, both the load and the pulley

raise

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Wheel and axle

Two cylinders that turn on the same axis

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friction

A force that slows or stops motion between two surfaces that are

touching

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Compound machine

A machine made up of two or more

simple machines