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3 years ago

A wooden box is pushed with 100 N towards North

1 answer:

7 0

0 N. The net force is found through thinking of the quantities as scalar. If you want to think of north as positive, think of south as negative. Then add them. 100 + (-100) = 0N

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Vitek1552 [10]

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2 years ago

A girl moves quickly to the center of a spinning merry-go-round, traveling along the radius of the merry-go-round. Which of the

DochEvi [55]

Answer:

The angular speed of the system increases.

The moment of inertia of the system decreases.

Explanation:

As we know that the girl is going towards the center of the circle so here the moment of inertia of the girl is given as

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here we know that

r = position of the girl from the center of the disc

now we know that the girl is moving towards the center so its distance will continuously decreasing

So the moment of inertia of the girl will decrease

Now we know that that with respect to the center of the disc there is no torque on the disc + girl system

So here we can use angular momentum conservation

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2 years ago

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3 years ago

What does a worm and wheel mechanism do to torque and speed

sergejj [24]

Answer:Explanation:

Image result for what does a worm and wheel mechanism do to torque and speed

Like other gear arrangements, a worm drive can reduce rotational speed or transmit higher torque. ... Each full 360 degree turn of a single start worm advances the gear by one tooth. For a multi start worm the gear reduction equals the number of teeth on the gear divided by the number of starts on the worm.

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