which has mechanical advantage less than 1; a pair of scissors or a pair of pliers
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A pair of scissors must have its MA less than 1, as it doesn't multiply force, instead its blades must cut the material fast.
A pair of pliers must have its MA more than 1, as it needs to multiply force, so that a nail can be pulled out by applying relatively less force (just an example).
A pair of pliers must have its MA more than 1, as it needs to multiply force, so that a nail can be pulled out by applying relatively less force (just an example).
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Explanation:
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