# 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?

Advantage Mechanical = Load/Effort

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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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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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.

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.

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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