Mechanical Advantage
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PeterPan
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PHYSICS
Mechanics
Mechanical Advantage
Machines multiply force by trading off movement, not by creating energy.
10 Feb 2026
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What fundamental trade-off does mechanical advantage rely on to amplify force?
Creating additional energy to increase output force without any input effort.
Reducing both force and movement to achieve greater efficiency.
Increasing output force by increasing the distance over which the input force is applied.
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PHYSICS
Mechanics
Mechanical Advantage
Mechanical advantage reveals how simple machines amplify force to ease human work
26 Jan 2026
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How does the law of the lever explain the concept of mechanical advantage in simple machines?
It states that the input force and output force must always be equal regardless of lever arm lengths.
It shows that the force amplification depends on the ratio of the lengths of the lever arms on which the input and output forces act.
It explains that mechanical advantage is achieved by increasing friction between the lever and its pivot point.
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