Firefighter Mechanical Aptitude · Question
A wheelbarrow is an example of which class of lever?
In a wheelbarrow, the load is between the fulcrum (wheel axle) and the effort (handles), making it a second-class lever.
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Question: A wheelbarrow is an example of which class of lever?
Answer options:
- First-class lever ✅ Second-class lever
- Third-class lever
- Compound lever
Correct answer: Second-class lever
Explanation: In a wheelbarrow, the load is between the fulcrum (wheel axle) and the effort (handles), making it a second-class lever.
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Question explanations
- 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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