Question

Consider the following objects and state with a brief explanation the class of lever each belongs to:

• $\text{Nail cutter}$
• $\text{Knife}$
• $\text{Forceps}$

Answer 1

• $\text{Nail cutter}:$ As the fulcrum is in between the load and the effort, it belongs to the $\text{class}1$ of levers.

• $\text{Knife}:$ As the effort is applied in between the fulcrum and the load, it belongs to the $\text{class}3$ of levers.
• $\text{Forceps}:$ Just as the case with tongs and knife, the effort is applied in between the fulcrum and the load, thus it also belongs to the $\text{class}3$ of levers.