In: Physics
List the 8 different types of simple machines. The 8th one is harder and less obvious.
Inclined Plane
Ex: Ramp, An inclined plane is a flat slanted surface that allows you to exert your input force over a longer distance.
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Wedge
Eg: Splitting wood with an ax.A Wedge is a divice that is thick at one end and tapers to a thin edge at the other end.
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Screws, Ex: A wood screw.
A screw is an inclined plane wrapped around a cylinder.
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Levers
Eg, Pulling a nail from a board with the claw of a hammer.
A lever is a ridgid bar that is free to piviot, or rotate, around a fixed point (flucrum)
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Wheel (and axel)
Eg: Screw Driver (Handle = wheel & Shaft = axel)
A wheel & axel is a simple machine made of 2 circular or cylindrical objects that are fastened together & rotate about a common axel.
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Pulley
Eg: Raising and lowering the school flag each day.
A pulley is a grooved wheel with a rope or cable wrapped around it.
When you pull the rope you can change the amout & direction
of your input force.