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mechanisms

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do by:Leyre Maria and Alba

levers

Wath is a lever??

100%

99%

we are going to learn about levers

https://www.bing.com/videos/search?q=lever&ru=%2fvideos%2fsearch%3fq%3dlever%26qs%3dn%26form%3dQBVR%26%3d%2525eAdministra%2520tu%2520historial%2520de%2520b%25C3%25BAsqueda%2525E%26sp%3d-1%26pq%3dlever%26sc%3d10-5%26sk%3d%26cvid%3d808D4CB0E332423C9EA9107B6DC06390%26ghsh%3d0%26ghacc%3d0%26ghpl%3d&view=detail&mid=40271D07A14583D2FFC140271D07A14583D2FFC1&rvsmid=E73406AB5BD6011A869FE73406AB5BD6011A869F&FORM=VDRVRV

título aquí

INDEX:

1- Whats a lever 2- Parts of levers 3- Class of levers 4- Law of the lever 5- Types of levers

what is a lever ??

A lever is a rigid bar that turns a round a point called a fulcrum.Various forces mayat on the lever at the same timeLeveres are mechanical devices used to scale the amount of force or travel in a mechanism

Parts of levers

class of levers

the 3 classes of levers

law of the lever:

20kg

80kg

f x d= R x r

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1m

levers

Brake lever: decrease speed, We control them with levers on the handlebars. These pull on cables activate the brakes on the weels

Hand crank:Has 2 parts. One is connected to a rotating shaft and the other forms a handle. We can use to apply force at a distance from the axis of the shaft. This makes it easier to turn. Is a class 2 of lever

Uses: We use to make rotation easier in various machanism

Bicycle handlebars: The handlebars work like a crank.

END

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