levers and mechanical advantage

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5 Terms

1
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What is the formula for mechanical advantage?

force arm/ resistance arm

2
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What is mechanical advantage? (>1)

a measure of how much a lever amplifies force

3
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What is mechanical disadvantage? (<1)

a measure of how much a lever amplifies speed

4
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Characteristics of third class levers (3)

always built to amplify speed, AFR, most in human body

5
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How does length of resistance arm impact mechanical advantage?

the longer the resistance arm, the further below 1 the mechanical advantage is. therefore greater speed is produced by the leaver due to the greater range of motion at the end of the lever