3.38. Damn, Vorobiev

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Uploaded: 21.08.2016
Content: 3.38. Чертов, Воробьёв.rar (10,37 kB)


3.38. M = mass of ball 100 g, tied to the end thread lengths l1 = 1 m, is rotated based on a horizontal plane at a frequency n1 = 1 s-1. The thread is shortened, and the ball is close to the axis of rotation to a distance l2 = 0,5 m. With what frequency n2 will then rotate the ball? What kind of job A commits an external force, shortening the thread? Ball friction on the plane ignored.


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