The square-threaded bolt is used to join two plates together as shown in (Figure 1). The bolt has a mean diameter of 55 mm and a lead of 3 mm . The tension in the bolt is 16 kN . The coefficient of static friction between the threads and the bolt is \mu s = 0.15. Determine the smallest torque M required to loosen the bolt. Express your answer to three significant figures and include the appropriate units
