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A man is using a machine and applying 400 N of force. If the mechanical advantage of this machine is doubled, how much force would he have to apply?

Answer 1

Isabella Alvarez

#200"N"#

Advantage Mechanical = Load/Effort

#:.MA=L/400#

You can see that if #MA# were to double then the effort would need to be reduced to #"200"N"# to double the quotient.

Even though your machine is superior, energy conservation means that you will have to exert twice as much effort.

Two excellent examples of this are pulleys and gears.

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Answer 2

Axel Acevedo

If the mechanical advantage of the machine is doubled, the force the man would have to apply is halved. Therefore, he would have to apply 200 N of force.

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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.