Firefighter Mechanical Aptitude · Question
Why is the actual mechanical advantage (AMA) of a real machine always less than its ideal mechanical advantage (IMA)?
Friction is always present in real-world machines, causing some of the input energy to be converted to heat, thus reducing the output force or work and making A
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Question: Why is the actual mechanical advantage (AMA) of a real machine always less than its ideal mechanical advantage (IMA)?
Answer options: ✅ Due to the presence of friction.
- Due to the material composition of the machine.
- Due to operator error.
- Due to imperfect design.
Correct answer: Due to the presence of friction.
Explanation: Friction is always present in real-world machines, causing some of the input energy to be converted to heat, thus reducing the output force or work and making AMA less than IMA.
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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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