First Class Levers

What is the definition of a first class lever?

• The fulcrum is located on the same side as the load.

• The fulcrum is located between the effort and the load.

• The load is located between the fulcrum and the effort.

• The effort is located between the fulcrum and the load.

Can you provide an example of a first class lever?

• A bookshelf

• A ladder

• A seesaw or a crowbar

• A bicycle

What is the mechanical advantage of a first class lever?

• Greater than 1

• Depends on the length of the lever

• Equal to 1

• Less than 1

Name the parts of a first class lever.

• Support, push arm, and pull arm

• Pivot, force arm, and resistance arm

• Wheel, axle, and handle

• Fulcrum, effort arm, and load arm

How does a first class lever differ from other types of levers?

• The load is placed between the fulcrum and the effort.

• The effort is placed between the fulcrum and the load.

• The fulcrum is placed on the same side as the load.

• The fulcrum is placed between the effort and the load.

Explain how a first class lever can be used to lift a heavy object with less effort.

• By placing the fulcrum closer to the effort and the load farther away from the fulcrum.

• By placing the fulcrum in the middle of the effort and the load.

• By placing the fulcrum closer to the heavy object and the effort farther away from the fulcrum.

• By using a second class lever instead of a first class lever.

In what real-life scenarios can you find first class levers being used?

• Screwdrivers and wrenches

• Scissors, pliers, crowbars, and the human neck when nodding

• Hammers and nails

• Bicycles and skateboards

What are the advantages of using a first class lever?

• They provide mechanical advantage and can be used to increase force or distance.

• They can only be used to decrease force

• They are less stable than other types of levers

• They provide no mechanical advantage

Discuss the role of the fulcrum in a first class lever.

• It provides a strong grip for the user.

• It determines the length of the lever.

• It acts as the pivot point around which the lever rotates.

• It helps to measure the force applied.