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JEE Main Physics Class 11 System of Particles and Rotational Motion Part 1 Questions

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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 if coefficient of friction between the mop and the floor is µ, the torque, applied by the machine on the mop is:

[10 Jan. 2019 I]

µFR∕3
µFR∕6
µFR∕2
2
3
µFR

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