Firefighter Mechanical Aptitude · Question
A wheelbarrow is an example of which type of simple machine, primarily?
A wheelbarrow acts as a second-class lever, where the load (often in the bin) is between the fulcrum (the wheel axle) and the effort (the handles).
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Question: A wheelbarrow is an example of which type of simple machine, primarily?
Answer options:
- First-class lever ✅ Second-class lever
- Third-class lever
- Inclined plane
Correct answer: Second-class lever
Explanation: A wheelbarrow acts as a second-class lever, where the load (often in the bin) is between the fulcrum (the wheel axle) and the effort (the handles).
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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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