Levers

Question 1

1st class lever

Answer 1

-Fulcrum in the middle
-Mechanical advantage depends on where the fulcrum is placed on the lever
E.g. the elbow when throwing a cricket ball

Question 2

2nd classs lever

Answer 2

-Load is in the middle
-Mechanical advantage
E.g. jumping in long jump at the ankle

Question 3

3rd class lever

Answer 3

-Effort is in the middle
-Mechanical disadvantage
e.g. Bicep curl at the elbow

Question 4

Mechanical adbatge

Answer 4

-Effort arm>load arm
-Good for lifting
-Lift large loads with low effort
-Efficient lever
-Bad speed & ROM

Question 5

Mechanical Disadvantage

Answer 5

-Load arm>effort arm
-Inefficient lever
-Not good for lifting
-Good speed & ROM