175 mm Load on bracket Simple supports 275 mm A Bracket A 450 mm 12 mm W Section A-A A part of a bracket in the seat assembly of a bus is shown in the above picture. The load varies from 1450N to 140N as passengers enter and exit the bus. Assuming the bracket is made from SAE1020 hot-rolled and a Factor of Safety equal to 2.5, find the minimum width, W, for the cross section of the bracket as shown in above picture as Section A-A To ensure that we all will get the same answer, assume that you are required to use 99% reliability. Yield strength for SAE1020 is 207MPa and ultimate tensile strength is 379MPa.