Question

multiple choice question

which class is a lever with the resistance located between the fulcrum and the effort?

second
third
first

Explanation:

Identify the core components of a lever

Using the Skeletal Lever Systems knowledge point
A lever is a rigid structure that moves on a fixed point called a fulcrum (\(F\)). Two forces act on it: the effort (\(E\)), which causes movement, and the resistance (\(R\)) or load, which opposes movement.

Classify the lever based on component arrangement

Using the Skeletal Lever Systems knowledge point
Levers are classified into three classes depending on the relative positions of the fulcrum, effort, and resistance:

• First-class lever: The fulcrum is located between the effort and the resistance (\(E-F-R\)).
• Second-class lever: The resistance is located between the fulcrum and the effort (\(F-R-E\)).
• Third-class lever: The effort is located between the fulcrum and the resistance (\(F-E-R\)).

Determine the correct class for the given question

Using the Skeletal Lever Systems knowledge point
The question asks for the class where the resistance is located between the fulcrum and the effort. This arrangement (\(F-R-E\)) corresponds to a second-class lever.

Answer:

• Second (Correct answer)
• Third
• First