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Well Levers are a simple machine that was created by someone special. Levers help us make work easier. GO LEVERS!!!! Well Levers are a simple machine that was created by someone special. Levers help us make work easier. GO LEVERS!!!!
I always found it interesting that there are three classes of levers:

1st class: The exerted force (Fe) is on the opposite side of the fulcrum (F)of the resulting force (Fr). For example, a pry bar.

Fe-----F-----Fr

2nd class: For example, a wheelbarrow:

F-----Fr-----Fe

(the fulcrum is the wheel)

3rd class: For example a Baseball bat

Fr-----Fe-----F

(the fulcrum is your hand)

A fingernail clipper is a compound lever. It has a 2nd class and a 3rd class.


A see-saw provides good fun. Although you might not think so your knives, forks and spoons are levers. You have the brake and gear change levers on a cycle. You might not be aware that there are three basic types of levers. Many switches are levers. Your own body has quite a few "bone" levers. When you flick a small ball of paper by using your ruler you are using a lever. You use a lever called a spoon to stir with. A bedroom door is a lever, as are most hinged things.
Increasing force by mechanical advantage.

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Mechanical advantage = distance moved by input / distance moved by output

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Output force = input force * mechanical advantage

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Force * distance = work done

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(Input) force * distance = (Output) force * distance

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12y ago

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What are some examples 1st class levers?

Examples of first-class levers include a seesaw, scissors, and a crowbar. In these levers, the fulcrum is located between the effort (force) and the load (resistance).


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What is a list of first class levers?

Some examples of first-class levers include a seesaw, scissors, and pliers. These levers have the fulcrum placed between the effort force and the load, allowing for a balanced distribution of force.


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