SET A: What is the minimum diameter in mm of a solid steel shaft that a will not twist through more than 4 in a 7-m length when subjected to a torque of 10 kNm? What maximum shearing stress is developed? G = 90 GPa = SETB: What is the minimum diameter in mm of a solid steel shaft that will not twist through more than 3 in a 6-m length when subjected to a torque of 12 kNm? What maximum shearing stress is developed? G = 83GPa