Levers

Question 1

Whats a fulcrum ?

Answer 1

The point around which the lever rotates. (Joint)

Question 2

Whats a load ?

Answer 2

The force that is applied by the lever system. The load is the object you want to move a dumb bell with your arm.

Question 3

Whats an effort?

Answer 3

A force that is applied by the user of the lever system.

Question 4

What are the 3 levers?

Answer 4

First class
Second class
Third class

Question 5

Whats a lever?

Answer 5

In your body, the term lever refers to a system of muscles and bones working together to help you move.

Question 6

Example of a first class lever?

Answer 6

The joint between the skull and the first vertebrae is a first class lever. (E.g moving head back to head a ball in football)

Question 7

Example of a second class lever?

Answer 7

The heel joint is a second class lever. (E.g when a diver lifts their heels up before their dive.)

Question 8

Example of a third class lever?

Answer 8

The elbow joint is a second class lever (e.g when doing a bicep curl or picking up something)

Question 9

Whats mechanical advantage?

Answer 9

It allows the load to be moved with relatively small muscular effort.