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Q. A deep-sea fisherman struggles to bring in a big salmon (see figure below). Find the force each hand must exert on the pole if the tension in the line is 172 N. Neglect the weight of the pole and assume that the force exerted by the left hand is directed along the horizontal. (Let θ = 51.50 and L = 1.05 m.)

Q. A horizontal board weighing 198.0 N is supported at points A and B. The plank serves as a platform for a painter, who weighs 558.5 N. Find the maximum distance D, such that the plank will not tip, no matter where the painter stands.

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