Simple Machines Flashcards

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1
Q

Simple Machines

A

One of the six basic types: Lever, Pulley, Wheel n Axle, Inclined Plane, Wedge, and Screw

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2
Q

Lever Family

A

Simple Lever, Pulley, Wheel and Axle

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3
Q

Inclined Plane Family

A

Simple Incline, Wedge, Screw

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4
Q

Lever Types

A

1st, 2nd, and 3rd Class

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5
Q

First Class Levers

A

Output Force, Fulcrum, Input Force. Ex: Pulling with a Claw-Hammer

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6
Q

2nd Class Levers

A

Fulcrum, Output Force, Input Force. Ex: Pushing a Wheelbarrow

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7
Q

3rd Class Levers

A

Fulcrum, Input Force, Output Force. Ex: Lifting a Weight

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8
Q

Pulleys

A

A different kind of lever, they are 1st Class Levers.
The middle is always a fulcrum. If the pulley is moving or you use multiple fulcrums, there is more mechanical advantage.

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9
Q

Wheel and Axle

A

Wheels are basically levers or pulleys connected to a shaft. When you turn the wheel the force is multiplied for a much stronger output.

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10
Q

Inclined Planes’ Function

A

Inclined planes multiply and redirect force. When you push up a ramp, the object is going in a direction parallel to it and the ramp redirects this force upwards.

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11
Q

Wedges

A

A wedge is a modified inclined plane. An axe is an example of a wedge; it goes into a piece of wood and redirects the force sideways so that the wood splits apart.

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12
Q

Screws

A

Screws are inclined planes wrapped around a cylinder. These gently sloping threads around the metal cylinder allow a small force to act over a large distance.

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13
Q

Compound Machines

A

A machine that combines two or more simple machines is called a compound machine. A scissor is an example of a compound machine, it uses two first-class levers connected by a common fulcrum.

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