Firefighter Mechanical Aptitude · Question
A lever is categorized into three classes based on the relative positions of the fulcrum, load, and effort. A wheelbarrow is an example of which class of lever?
In a second-class lever, the load is located between the fulcrum and the effort. A wheelbarrow fits this description, with the wheel as the fulcrum, the load in
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Question: A lever is categorized into three classes based on the relative positions of the fulcrum, load, and effort. A wheelbarrow is an example of which class of lever?
Answer options: ✅ Second-class lever
- First-class lever
- Third-class lever
- Fourth-class lever
Correct answer: Second-class lever
Explanation: In a second-class lever, the load is located between the fulcrum and the effort. A wheelbarrow fits this description, with the wheel as the fulcrum, the load in the bin, and the effort applied at the handles.
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- Scenario 1: Which simple machine uses a fulcrum to multiply force or change the direction of force?
- Scenario 2: If a hydraulic jack has a small piston with an area of 5 cm² and a large piston with an area of 50
- Scenario 3: Which of the following would require the MOST force to move?
- Scenario 4: A rope is tied to a heavy box. Instead of pulling the box directly, a firefighter wraps the rope a
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