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A 10 m long board that has a mass of 8 kg is held up by two vertical ropes. The left rope is 3 m from the left end of the board, and the other rope is 2 m from the right end of the board. A 55 kg box sits 2 m from the right end. Find the tension in the rope on the left. Hint: - With forces applied at different places, this is a beam problem - pick a pivot point - measure all distances from the pivot point - Apply ΣT=0 - Don't forget torque = force x dist, so you need to multiply the masses by g= 9.8 m/s² - If you need more information, apply ΣF=0
Sagot :
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