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Answer to Question #126119 in Physics for Alok Kumar
Question #126119
a rotor / fan to scoop the air rotates at 60 rpm. what should be the radius of the rotor so that it just starts to work as a vacuum cleaner
Expert's answer
Even this fan may work as a vacuum cleaner, but the efficiency of cleaning may not be sufficient. Typical radius of vacuum cleaner rotor is 40 mm.
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Sir how can we solve this question numerically ? Can we apply conservation of linear momentum in this case ?
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