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Fig.7.4023 A man stands on a rotating platform, with his arms stretched horizontally holdiA man stands on a rotating5 kg weight in each hand. The angular speed of the platform is 30 revolutiminute. The manweight from the axisman together with the platform may be taken to be constant and equal to 7.6 kg m2(a) What is his new angular speed? (Neglect friction.)(b) Is kinetic energy conserved in the process? If not, from where does the changecome about?7.23ons perthen brings his arms close to his body with the distance of eachchanging from 90cm to 20cm. The moment of inertia of the |
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Answer» Thank you so much |
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