1.A steel wire with mass 27.8 g and length 1.28 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m.
2.Design a concrete footing to support a 16in by 16 in column that is 13 feet high with f'c= 6000 psi. The footing has a f'c=3000psi. Assume the the footing base is 5 ft below the grade and the soil is 100 lb/ft with an allowable pressure of 4500lb/ft fy=60,000