painter of weight W climbs a ladder of weight W/3 and length L. At the position shown in the figure, the ladder begins to slip. Assume that there is a frictionless roller at A. What is the coefficient of static friction, ?s , at B?
(A) 0.19
(B) 0.33
(C) 0.68
(D) 0.24
(D) 0.24
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