Consider a ladder with a painter climbing up it (Fig. 9-61). If the mass of the ladder

Question:

Consider a ladder with a painter climbing up it (Fig. 9-61). If the mass of the ladder is 12.0 kg, the mass of the painter is 55.0 kg, and the ladder begins to slip at its base when her feet are 70% of the way up the length of the ladder, what is the coefficient of static friction between the ladder and the floor? Assume the wall is frictionless.