mechanical advantage instructions please use this powerpoint and pages 125-135 to gain an...

Mechanical Advantage Instructions Please use this Powerpoint and Pages 125-135 to gain an understanding of how mechanical advantage works and fill out the note sheet.

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Mechanical AdvantageInstructions

Please use this Powerpoint and Pages 125-135 to gain an understanding of

how mechanical advantage works and fill out the note sheet.

What is mechanical advantage?

• The number of times a machine multiplies the effort force.

Page 3: Mechanical Advantage Instructions Please use this Powerpoint and Pages 125-135 to gain an understanding of how mechanical advantage works and fill out

Lever MA Formula

Lever (any class)

MA lever = distance from fulcrum to effort distance from fulcrum to

resistance

= Le Lr

Page 4: Mechanical Advantage Instructions Please use this Powerpoint and Pages 125-135 to gain an understanding of how mechanical advantage works and fill out

Wheel and axle MA Formula

MA w&a = radius of wheel = rw radius of axle ra

Page 5: Mechanical Advantage Instructions Please use this Powerpoint and Pages 125-135 to gain an understanding of how mechanical advantage works and fill out

Pulleys MA Formula

• Fixed pulley: Always 1 (does not change the force, only direction)

• Moveable Pulley/Block and Tackle = the number of sections of rope that support the object

**If the string goes up, count it**If the string goes down, don’t count

Page 6: Mechanical Advantage Instructions Please use this Powerpoint and Pages 125-135 to gain an understanding of how mechanical advantage works and fill out

Inclined Plane MA Formula

MA inclined plane = length of incline = L

height of incline h

Page 7: Mechanical Advantage Instructions Please use this Powerpoint and Pages 125-135 to gain an understanding of how mechanical advantage works and fill out

Please try the calculations on the back of your Mechanical

Advantage paper!

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