2.1.2 Second-class levers

• In a second-class lever, the load is on the same side of the fulcrum as the effort

  False
• Second-class levers provide a mechanical advantage by allowing heavy loads to be moved with less effort


  True
• In a second-class lever, the fulcrum is positioned between the load and the effort
• Second-class levers require more effort than first-class levers to move a heavy load

  False
• What is the relative position of the effort in a second-class lever?

  Opposite side of load
• In a second-class lever, the load is on one side of the fulcrum.


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

  Between load and effort
• What is the position of the fulcrum in a third-class lever?

  Between fulcrum and effort
• In a second-class lever, the fulcrum is located between the load and the effort
• What is the effort position in a third-class lever relative to the fulcrum and load?

  Between fulcrum and effort
• What is the defining characteristic of a second-class lever system?

  Fulcrum between load and effort
• Where is the effort applied in a second-class lever relative to the fulcrum and load?

  Opposite side of load
• In a second-class lever, the effort is applied on the opposite side of the load relative to the fulcrum
• What is the position of the fulcrum in a second-class lever?

  Between load and effort
• In a second-class lever, the effort is applied on the opposite side of the fulcrum relative to the load
• In a first-class lever, the fulcrum is positioned between the load and the effort
• Second-class levers provide a mechanical advantage by allowing less effort to move a heavy load.


  True
• Match the lever class with its mechanical advantage:

  First-class ↔️ Advantage or disadvantage

  Second-class ↔️ Mechanical advantage

  Third-class ↔️ No mechanical advantage
• A wheelbarrow is an example of a second-class lever where the wheel acts as the fulcrum.

  True
• In a bottle opener, the edge of the counter acts as the fulcrum
• A mechanical advantage occurs when the effort needed to overcome a load is less than the weight
• What acts as the fulcrum in a calf raise, a real-life example of a second-class lever?

  Ball of the foot
• What is the load in a nutcracker, an example of a second-class lever?

  The nut
• In a second-class lever, the fulcrum's placement provides a mechanical advantage by allowing less force to overcome the load.


  True