Mechanical Advantage Pg. 280 Teacher: Ms. Barnard.

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Mechanical Advantage Pg. 280 Teacher: Ms. Barnard

Simple machines in the body The body is made up of multiple levers There is no wheel and axle in the body r/solutions/hydraulicus/humanbody.htmhttp:// r/solutions/hydraulicus/humanbody.htm ces/powerpoint/levers/sld012.htmhttp:// ces/powerpoint/levers/sld012.htm

Review transmission What is transmission? ▫Large force to move objects slowly OR a smaller force to move objects quickly Transmission Lego ▫In first gear, what was the size of the driving gear? ▫What about in third gear?

A machine can make work easier by increasing the force exerted Mechanical Advantage (MA) = Output force Input force MA can also be called the force ratio

Output force = the force the machine applies on the object Input force = the outside force that is applied to the machine

MA clip d6f5f6f b&t=Simple-Machineshttp:// d6f5f6f b&t=Simple-Machines

MA example MA = Fo/Fi ▫You apply 20N to a lever to lift a 144N weight.  What is the mechanical advantage?

Homework Work through the worksheet. Read pg ,

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