BOWLING BALL EXAMPLE

If you lift a bowling bowl two meters, it will take 8 newtons of force. However, if you roll it down a ramp it will divide the force into two.

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A lever is made of FLE.

FLE:

F1: Fulcrum (Balancing point, where lever tips.)

L2: Load (Lifts it up)

E3: Effort (Pull/Push)

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Input over Output = Mechanical Advantage (Ma)

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Here is my guess of FLE on a nail cutter:

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Here is my estimate of FLE on a wheelbarrow: 

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A wheel and axle has a big wheel and a small wheel. The small one is an axel. The big one is a wheel. A doornkbob is a wheel and axe