A pulley with a mechanical advantage of 5 is used to lift a bucket weighing 285 N. How much force must be used to lift the bucket?

Answer 1

#57N#

#"Mechanical Advantage" = "output force"/"input force"# Here, Output Force is the weight of the bucket, #285N#, and Input Force is the force needed to lift it.

#=> "Input Force"# #=# #"output force"/"mechanical advantage"# #=285/5# #=57 N#

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Answer 2

Charlotte Aaron

The force required to lift the bucket is 57 N.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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