Firefighter Mechanical Aptitude · Question
If a small gear drives a larger gear, what happens to the rotation speed and torque of the larger gear relative to the small gear?
When a smaller gear drives a larger gear, the larger gear rotates slower but produces more torque (assuming ideal conditions and power is conserved).
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Question: If a small gear drives a larger gear, what happens to the rotation speed and torque of the larger gear relative to the small gear?
Answer options:
- Speed increases, torque decreases ✅ Speed decreases, torque increases
- Both speed and torque increase
- Both speed and torque decrease
Correct answer: Speed decreases, torque increases
Explanation: When a smaller gear drives a larger gear, the larger gear rotates slower but produces more torque (assuming ideal conditions and power is conserved).
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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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