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20N 2 kg 3 kg ..... 130 0 4. Two boxes of masses 2 and 3 kg are connected by a light string. A force of 20 N is applied 30 degrees above horizontal on 3 kg box as shown in the diagram. The coefficient of kinetic friction between surfaces is 0.2. a. Label forces (with an arrow indicating the direction) acting on both boxes. (4 points) b. Determine the acceleration of the boxes. (6 points) c. Determine the tension of the string. (6 points)