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why is third class lever is always less than 1​

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Answer:

The value of MA in third class lever is always less than one because the load arm is greater than the effort arm.

Step-by-step explanation:

As we know that when the load arm is greater than the effort arm, the mechanical advantage will always be lesser than one, which results in gain in speed.
Mechanical advantage of a class 3 lever is always less than 1 because the load arm is always longer than effort arm. This helps by reducing the applied force(effort). So, it is a speed multiplier.
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