*13-44. If the motor draws in the cable with an acceleration of 3 m/s², determine the reactions at the supports A and B. The beam has a uniform mass of 30 kg/m, and the crate has a mass of 200 kg. Neglect the mass of the motor and pulleys. A 2.5 m 3 m/s² 0.5 m с 3 m B
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