Firefighter Mechanical Aptitude · Question
If a force of 100 N is applied to lift a 400 N load using a simple machine, what is the ideal mechanical advantage (IMA) if friction is ignored?
The ideal mechanical advantage is the ratio of the load (output force) to the effort (input force), so 400 N / 100 N = 4.
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Question: If a force of 100 N is applied to lift a 400 N load using a simple machine, what is the ideal mechanical advantage (IMA) if friction is ignored?
Answer options:
- 0.25
- 1 ✅ 4
- 400
Correct answer: 4
Explanation: The ideal mechanical advantage is the ratio of the load (output force) to the effort (input force), so 400 N / 100 N = 4.
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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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