(A)/ Four masses A, B, C and D are attached to a rotating shaft with radii 50 mm, 62.5 mm, 100 mm and 75 mm respectively. The distance between planes A and B; between planes B and C and between planes C and D are 600 mm each. The masses B, C and D are 20 kg, 10 kg and 8 kg respectively. If the shaft is in complete balance, then find the angular position of masses C and D from mass B.
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- The uniform 240-lb bar AB is held in the position shown by the cable AC. Compute the tension in the cable.The figure models the handle of the water cock described in Prob. 4.9. Draw the FBD of the handle, neglecting its weight. Count the unknowns.Locate the instant center of rotation of bar AB for each case shown.
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