Lever Classes

Which part of a lever is responsible for moving the load?

• Load

• Arm

• Fulcrum

• Effort force

What type of lever has the fulcrum between the effort and the load?

• First-class lever

• Second-class lever

• Third-class lever

• None of the above

Which part of your body acts as a lever when you walk?

• Legs

• Arms

• Fingers

• Jaw

What is the main purpose of levers?

• To hold objects in place

• To measure weight accurately

• To multiply the applied force to move objects

• To balance loads evenly

What is a common example of a second-class lever?

• Stapler

• Seesaw

• Wheelbarrow

• Fishing rod

What is the disadvantage of using second-class levers?

• They require more effort to operate

• The load does not move as far

• They are less stable than other levers

• They are only suitable for light loads

In a third-class lever, where is the effort applied in relation to the load and the fulcrum?

• Between the load and the fulcrum

• Between the effort and the load

• Between the load and the effort

• At the end of the lever arm

How does a third-class lever amplify the movement of the applied effort?

• Reducing the load

• Increasing the load

• Increasing the length of the lever arm

• Decreasing the length of the lever arm

What is the main function of a first-class lever?

• Lift heavier loads

• Move loads further or faster

• Balance effort and load

• Change the direction of the load

Who is credited with the quote, "Give me a lever long enough and a fulcrum on which to place it, and I will move the world"?

• Aristotle

• Isaac Newton

• Archimedes

• Leonardo da Vinci