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Each of the three solid steel shafts has a diameter of 20 mm. Shafts AB and EF are 600 mm long, whereas shaft CD is 300 mm long. The pitch radii of gears B, C, and F are 30, 80 and 50 mm, respectively. For steel E = 200 GPa and v=0.3. If torque of 10 N.m is applied to shaft AB as shown, determine the shear stresses in each shaft and the angle through which each gear rotates.

Fig: 1