The floor-polishing machine rotates at a constant angular velocity. If it has weight W, determine the couple
Question:
The floor-polishing machine rotates at a constant angular velocity. If it has weight W, determine the couple forces F the operator must apply to the handles to hold the machine stationary. The coefficient of kinetic friction between the floor and brush is μk. Assume the brush exerts a uniform pressure on the floor.
Given:
W = 80 lb
μ k = 0.3
a = 1.5 ft
b = 2 ft
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