Question

To which class of lever does a pair of scissors belong?

Hint:

Remember the classes of levers with the mnemonic "FLE" for the component in the middle: Class 1 has F in the middle, Class 2 has L in the middle, and Class 3 has E in the middle.

Answer 1

Step 1: Understanding the Concept:
Levers are classified based on the relative positions of the Fulcrum (F), Load (L), and Effort (E).
Step 2: Detailed Explanation:
In a pair of scissors:
1. The pivot point (screw) is the Fulcrum, which is located in the middle.
2. The effort is applied at the handles by the fingers.
3. The load (the object being cut) is at the blades.
Since the Fulcrum is between the Effort and the Load, it is a Class I lever.
Step 3: Final Answer:
Scissors belong to Class I levers.