A - Levers :) Flashcards

(8 cards)

1
Q

What are the three components of a lever?

A

Fulcrum
Resistance
Effort

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2
Q

Give a action that is a first class lever
Draw one

A

Elbow extension
Sheet: Levers A

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3
Q

Give a action that is a second class lever
Draw one

A

Plantar flexion of ankle
Sheet: Levers B

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4
Q

Give a action that is a third class lever
Draw one

A

Everything else
Sheet: Levers C

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5
Q

What levers are in mechanical advantage?

A

2nd

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6
Q

What levers are in mechanical disadvantage?

A

1st and 3rd

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7
Q

Describe mechanical advantage

A

Effort arm is larger than resistance arm
+Less effort to over come a heavy resistance
-Don’t have great speed
-Don’t have a great range of movement

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8
Q

Describe mechanical disadvantage

A

Resistance arm is larger than the effort arm
+Apply more speed
+Increases range of movement
-Takes large effort to overcome resistance

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