## 10x-14 Pushing a Car

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If you happen to drive a car with a manual transmission
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and you've ever let the battery die, well, there's a good chance you've had to push your car.
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Let's talk about the forces involve in pushing a car.
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Let's say we're lucky enough to have 3 people pushing this car.
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Our green- and purple-haired doctors and, oh I don't know, Albert Einstein.
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Let's say we're looking at this car from above.
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Here's our bird's-eye view of the car--from above--and the mass of this car is 1000 kg.
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Let's say Einstein is pushing from directly behind--here's the top of Einstein's head,
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and there are his arms.
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The green-haired doctor is pushing from the side at a small angle, you'll notice.
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The purple-haired doctor is pushing from the other side, also at a small angle.
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is that they can all push with exactly the same force.
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When they all push on this car at that same time with this exact same force,
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the acceleration of the car is 0.5 m/s².
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The angle that the green- and purple-haired doctors are pushing at we'll call α.
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For this problem α is 30 degrees, so they're pushing at a 30-degree angle.
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Einstein here is pushing directly up on the back of the car,
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but these guys are doing it at a 30-degree angle.
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I want you to tell me with what force is each person pushing.
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Title:
10x-14 Pushing a Car
Video Language:
English
Team:
Udacity
Project:
PH100 - Intro to Physics
Duration:
01:13