Physics · Rotational Mechanics
A cleaning machine presses a circular mop of radius R = 30 cm vertically down on a floor with a total force F = 25 N and rotates it with a constant angular speed about the vertical axis passing through the centre of the mop. If the force is distributed uniformly over the mop and the coefficient of friction between the mop and the floor is μ = 0.25, what is the value of torque (in N-cm) applied by the machine on the mop?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1175 N-cm
- 2150 N-cm
- 3125 N-cm✓
- 4100 N-cm
Correct answer
125 N-cm
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