Firefighter Mechanical Aptitude · Question
When a small gear drives a large gear, what is the effect on speed and torque?
When a smaller driving gear meshes with a larger driven gear, the larger gear rotates slower (speed decreases) but produces more rotational force (torque increa
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Question: When a small gear drives a large gear, what is the effect on speed and torque?
Answer options: ✅ Speed decreases, torque increases.
- Speed increases, torque decreases.
- Both speed and torque increase.
- Both speed and torque decrease.
Correct answer: Speed decreases, torque increases.
Explanation: When a smaller driving gear meshes with a larger driven gear, the larger gear rotates slower (speed decreases) but produces more rotational force (torque increases). This is a common method for increasing mechanical advantage.
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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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