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Grade upto college level Mechanics

The handle of a floor mop of mass m makes an angle θ with the vertical direction; see Fig. Let be the coefficient of kinetic friction between mop and floor and the coefficient of static friction between mop and floor. Neglect the mass of the handle. (a) Find the magnitude of the force F directed along the handle required to slide the mop with uniform velocity across the floor. (b) Show that if θ is smaller than a certain angle θ₀ the mop cannot be made to slide across the floor no matter how great a force is directed along the handle. What is the angle θ₀?

Amit Saxena

11 Years agoGrade upto college level

1 Answer

Navjyot Kalra

11 Years ago

When the mop slides down and moves with constant velocity, the acceleration a_x should be equal to zero, that is, a_x = 0.

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