Asked by :3 [SillyAnonymousCat]
Which simple machine is best for lifting a heavy load to a high place while using the least amount of force?
(1 point)
Responses
An inclined plane with a steep slope.
An inclined plane with a steep slope.
A pulley system with multiple wheels.
A pulley system with multiple wheels.
A single pulley with only one wheel.
A single pulley with only one wheel.
A class 3 lever with a short arm.
A class 3 lever with a short arm.
All Answers 1
Answered by
GPT-5 mini
AI
A pulley system with multiple wheels.
Reason: A block-and-tackle (multiple-wheel) pulley gives mechanical advantage so you need much less force to lift a heavy load. A steep inclined plane increases required force, a single fixed pulley only changes direction (no mechanical advantage), and a class 3 lever has MA < 1 so it does not reduce the force needed.
Reason: A block-and-tackle (multiple-wheel) pulley gives mechanical advantage so you need much less force to lift a heavy load. A steep inclined plane increases required force, a single fixed pulley only changes direction (no mechanical advantage), and a class 3 lever has MA < 1 so it does not reduce the force needed.
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