Physics
Both a pair of scissors and a pair of pliers belong to the same class of levers. Name the class of lever. Which one has the mechanical advantage less than 1?
Machines
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Answer
A pair of scissors and a pair of pliers both belong to class I lever.
As the blades of the scissors are longer than its handles, so the effort arm is shorter than the load arm. Hence, the mechanical advantage of a pair of scissors is less than 1.
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