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3 years ago

Which statements describe how a machine can help make work easier? Select two options.

Physics

1 answer:

ad-work [718]3 years ago

6 0

Answer:

It can put out more force than the input force by decreasing the distance through which force is applied.
It can apply a force to an object in a different direction than the force applied to the machine.

Explanation:

Assuming the machine is a simple machine, such as a lever or pulley, the machine will not do any more work than is put into it. However, it can change the magnitude or direction (or both) of the input force required to achieve a particular output force.

Because the machine does not increase the work done, if the output force is greater, the output distance must be less.

The applicable observations are ...

It can put out more force than the input force by decreasing the distance through which force is applied.
It can apply a force to an object in a different direction than the force applied to the machine.

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34kurt

You'll never get the correct answer without the correct conversion factor. Note carefully that you have no decimal. It should be
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Read 2 more answers

In a swimming meet, the swimmers swim a total of 8 laps of a 50-meter-long swimming pool. What is the distance traveled by a swi

N76 [4]

Answer:

The swimmer has a distance traveled of 800 meters.

The final displacement of the swimmer is 0 meters.

Explanation:

A lap is a round trip made by a swimmer in the pool, so that the distance traveled by swimmer is sixteen times the length of the swimming pool. That is:

$s = \left(2\,\frac{travels}{lap} \right)\cdot \left(8\,laps \right)\cdot \left(50\,\frac{m}{travel}\right)$

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The displacement is the distance between swimmer and a reference point, let suppose that reference point is located at the beginning of the first lap. Hence, the final displacement of the swimmer is 0 meters.

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