Grade 9Mechanics
i have to 2 rotatimg machines, that rotates when air blows,, if one machine has a greater radius,,, and same wind blows over the machines,,, then which one will have greater revolutions per min.!?????? Pls help!!!!
1 Answer
pratish shrivastava
according to me,the machine which have less radius have greater revolution per min.... because as the radius increases,moment of inertia increases since, moment of inertia is inversely proportional to angular velocity(at constant torque)
so,,,,
the machine which have less radius have greater angular velocity & have greater revolution
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