Arod loaded in tension with an axial force of p- 1200 n and circular cross-sectional area of a undergoes a nominal stress ofo p/a pia. 1(a)-using a design factor of 3.0 and a material strength of 120 kpa, determine the minimum diameter of a solid circular rod. 1b)-using a proper table, select a preferred diameter and determine the rod's factor of safety 1(c) -the following variations are assumed: the rod's diameter is manufactured within ± 3% ofits nominal dimension, the load is known within± 4% ofthe nominal load, and the material strength is known within 6% of the nominal strength value. if the designer is using nominal values and a stress equation, determine what design factor should be used so that the stress does not exceed the strength. the load application would be considered dynamic (a sudden increase from a zero value) while eccentricity is not considered here. note: the positive and negative values are the maximum and minimum values allowed in the manufacturing, respectively