Mikolitis-Quiz11 - EGM 3400 and 3401 (circle one) Spring...

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EGM 3400 and 3401 (circle one) NAME:_______________________ Spring 2007 Quiz 11 Open book/Closed notes – Time limit = 25 minutes A hoop of radius R and mass m starts from rest and rolls without sliding down an inclined plane that forms an angle θ with the horizontal. Find the speed of the hoop after it has rolled a distance L along the inclined plane. Solution: Method 1 – Conservation of mechanical energy Rolls without sliding implies that both the normal and friction force at the point of contact do no work, hence only gravity (a conservative force) does work.
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