Problem 4.57 Two boxes, A and B, are connected to each end of a light vertical r

Question

Problem 4.57 Two boxes, A and B, are connected to each end of a light vertical rope, as shown in the following figure. A constant upward force 88.0 N is applied to box A. Starting from rest, box B descends 12.0 m in 4.50 s The tension in the rope connecting the two boxes is 30.0 N (Figure 10 Figure 1 V of 1 Part A What is the mass of box B? Express your answer with the appropriate units. m Value Units Submit My Answers Give Up Part B What is the mass of box A? Express your answer with the appropriate units. m Value Units My Answers give Up Submit

Explanation / Answer

A) mass of B = F/a

= 30/(12*2/4.5^2)

= 25.3 kg

B) mass of A = (88-30)/(12*2/4.5^2)

= = 48.9 kg

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