4. Three ropes are used to pull a large crate. The three ropes were oriented as shown in the figure at the right. Find the magnitude and direction of a fourth rope that will make the sum of the four forces be zero. B (80.0 N) 30.0° À (100.0 N) 30.0° -x 53.0⁰ * 4 C (40.0 N)
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