P17.18 The 32 mm diameter rod AB shown in Figure P17.18 has a length L = 1.5 m. The rod is made of bronze [E = 105 GPa] that has a yield stress y = 330 MPa. Collar C moves along the rod at a speed v. = 3.5 m/s until it strikes the rod end at B. If a factor of safety of 4 with respect to yield is required for the maximum normal stress in the rod, determine the maximum allowable mass for collar C. L Collar C B FIGURE P17.18