Firefighter Mechanical Aptitude · Question
A single fixed pulley primarily changes:
Fixed pulley: MA = 1; changes direction only. Movable pulley: MA = 2 (halves force, doubles distance).
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Question: A single fixed pulley primarily changes:
Answer options:
- The amount of force needed ✅ The direction of force
- The mass of the load
- Friction
Correct answer: The direction of force
Explanation: Fixed pulley: MA = 1; changes direction only. Movable pulley: MA = 2 (halves force, doubles distance).
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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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