Q.

The mechanical advantage of a class-three lever is always ____ than one.


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Detailed Solution

The mechanical advantage of a class-three lever is always less than one.
This is because the effort arm is always shorter than the load arm. “In a class-three lever, the effort is applied between the fulcrum and the load.” Some examples of class–three level are knives, shovels, forceps etc.
 
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The mechanical advantage of a class-three lever is always ____ than one.