At a picnic, there is a contest in which hoses are used to shoot water at a beach ball from three directions. As a result, three forces act on the ball, F1, F2, and F3 (see the drawing). The magnitudes of F1 and F2 are F1 = 50.0 newtons and F2 = 90.0 newtons. Using a scale drawing and the graphical technique, determine (a) the magnitude of F3 and (b) the angle theta such that the resultant force acting on the ball is zero.
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下 S F2 60.0° F3
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