Levers

Question 1

What are the three classes of levers?

Answer 1

The three classes of levers are:
* Class 1
* Class 2
* Class 3

Each class is defined by the relative positions of the effort, load, and fulcrum.

Question 2

In a Class 1 lever, where is the fulcrum located?

Answer 2

The fulcrum is located between the effort and the load.

An example of a Class 1 lever is a seesaw.

Question 3

What is the position of the load in a Class 2 lever?

Answer 3

The load is located between the fulcrum and the effort.

An example of a Class 2 lever is a wheelbarrow.

Question 4

In a Class 3 lever, where is the effort applied?

Answer 4

The effort is applied between the fulcrum and the load.

An example of a Class 3 lever is a pair of tweezers.

Question 5

True or False: Class 1 levers are often used in sports.

Answer 5

True

Class 1 levers are commonly found in sporting actions like throwing.

Question 6

Fill in the blank: In a Class 2 lever, the _______ is always closer to the fulcrum than the effort.

Answer 6

load

This configuration allows for a mechanical advantage in lifting.

Question 7

What advantage does a Class 3 lever provide?

Answer 7

A Class 3 lever allows for a greater range of motion and speed of movement.

This is beneficial in activities like swinging a bat.