Question
which example represents a Class 2 lever? A. tweezers plucking hairs B. salad tongs picking up salad C. A screwdriver opening a paint can D. A car door being opened and shut
Answers
GPT-4o mini
A Class 2 lever has the load positioned between the effort and the fulcrum. In the examples provided:
A. **Tweezers plucking hairs** - This is a Class 1 lever (fulcrum in the middle).
B. **Salad tongs picking up salad** - This is also a Class 1 lever (fulcrum in the middle).
C. **A screwdriver opening a paint can** - This is a Class 1 lever (fulcrum at the end).
D. **A car door being opened and shut** - This is a Class 2 lever (load being the door itself rests between the fulcrum at the hinges and the effort applied at the door handle).
Therefore, **D. A car door being opened and shut** represents a Class 2 lever.
A. **Tweezers plucking hairs** - This is a Class 1 lever (fulcrum in the middle).
B. **Salad tongs picking up salad** - This is also a Class 1 lever (fulcrum in the middle).
C. **A screwdriver opening a paint can** - This is a Class 1 lever (fulcrum at the end).
D. **A car door being opened and shut** - This is a Class 2 lever (load being the door itself rests between the fulcrum at the hinges and the effort applied at the door handle).
Therefore, **D. A car door being opened and shut** represents a Class 2 lever.