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[" To mop-clean a floor,a cleaning machi...

[" To mop-clean a floor,a cleaning machine "],[" presses a circular mop of radius R vertically "],[" down with a total force "F" and rotates it with a "],[" constant angular speed about its axis.If the "],[" force "F" is distributed uniformly over the mop "],[" and if coefficient of friction between the mop "],[" and the floor is "mu," the torque,applied by the "],[" machine on the mop is : "]

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To mop-clean a floor, a cleaning machine presses a circular mop of radius R vertically down with a total force F and rotates it with a constant angular speed about its axis. If the force F is distributed uniformly over the mop and the floor is mu , the torque, applied by the machine on the mop is :

To mop-clean a floor, a cleaning machine presses a circular mop of radius R vertically down with a total force F and rotates it with a constant angular speed about its axis. If the force F is distributed uniformly over the mop and the floor is mu , the torque, applied by the machine on the mop is : a) muFR//3 b) muFR//6 c) muFR//2 d) (2)/(3)muFR

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