Types of Levers and Their Functions

The video tutorial explains the three types of levers: first class, second class, and third class. Each type is defined by the position of the fulcrum, load, and force. First class levers have the fulcrum in the center, second class levers have the load in the center, and third class levers have the force in the center. Examples for each type are provided to illustrate their practical applications.

What is the primary difference between the three types of levers?

• The material they are made of

• The length of the lever arm

• The weight they can lift

• The position of the fulcrum, load, and force

In a first class lever, where is the fulcrum located?

• At the force

• At one end

• At the load

• In the center

Which of the following is an example of a first class lever?

• Wheelbarrow

• Fishing rod

• Teeter-totter

• Nutcracker

In a second class lever, where is the load positioned?

• At the fulcrum

• In the center

• At one end

• At the force

Which of the following is an example of a second class lever?

• Scissors

• Teeter-totter

• Fishing rod

• Nutcracker

In a third class lever, where is the force applied?

• At one end

• At the load

• In the center

• At the fulcrum

Which of the following is an example of a third class lever?

• Wheelbarrow

• Teeter-totter

• Fishing rod

• Nutcracker

What is the position of the fulcrum in a first class lever?

• At the force

• At the load

• At one end

• In the center

In a second class lever, what is the position of the force?

• At the fulcrum

• At one end

• In the center

• At the load

Which class of lever has the force applied in the center?

• First class

• None of the above

• Third class

• Second class