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