AP Physics 1: 3.5 Changes and Conservation Laws

AP Physics 1: 3.5 Changes and Conservation Laws. Which of the following would increase the rate at which the plate spins?

AP Physics 1Changes and Conservation Laws
LanguageEnglish Language
Science Practice 1Using representations and models

Transcript

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radius are there is spinning on top of a pole

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has shown all right Which of the following would increase

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the rate at which the plates spin Select two here

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in the aisle All right well let's see we're dealing

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with something That's turning huh That must mean we're dealing

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with angular momenta ding ding because we're geniuses We know

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that angular momentum equals mass times velocity times the objects

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radius or we just got a clever too one day

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And because we're super geniuses we know that momentum is

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conserved whether that's angular momentum or linear momentum So once

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forces applied and objects total momentum won't change unless another

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force acts on it So if momentum doesn't change we

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know that if we want to raise velocity we have

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tto lower one of the other variables That means we

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can decrease the mass of the plate or decrease the

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radius of the plate We'll do it Either it is

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or both would mean that the velocity would have to

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increase to maintain a total angular momenta So are correct

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choices are a and c and looking at our equation

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we can see that the length of the pool doesn't

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affect angular momentum so be doesn't work and placing a

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small way that the edge of the plate would increase

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mass was it would throw off the delicate balance of

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the plate and well ruin the whole act You don't

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even wanna think about Answer date Speaking of super genius

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is conservation of momentum is another of isaac newton's contributions

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to physics It comes from his laws of motion but

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he wasn't much of a place better He wouldn't All 00:01:43.663 --> [endTime] my great no