MCH 151

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Uploaded: 18.09.2014
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151. On a bench of Zhukovsky the person sits and everyone holds on outstretched arms of the weight the mass of m=5 of kg. Distance from each weight to an axis of a bench of L1=70 cm. The bench rotates with a frequency ν1=1с-1. How the frequency of rotation of a bench and what work will change And the person if he squeezes hands so will make, what the distance from each weight to an axis will decrease to L2 = 20 cm? The moment of inertia of the person and a bench (together) concerning axis J = 2,5 кг×м2.

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