5.2 Levers

Question 1

Levers

Answer 1

1st class = effort (left), fulcrum (middle), resistance (right) = extension
2nd class = fulcrum (left), resistance (middle), effort (right) = plantar flexion
3rd class = fulcrum (left), effort (middle), resistance (right) = flexion

Question 2

Mechanical dis/advantage

Answer 2

Mechanical advantage = effort arm longer than resistance arm
Mechanical disadvantage = resistance arm longer than effort arm