Recent content by johntuan2009

E=Stress/Strain E=(force/area)/(Change in length/original length) E*(change in length/original length)= force/area area=force/(E*(change in length/original length)) PiR^2=(390N)/((2.0*10^11)/(0.0021m/1.92m)) R^2=((390N)/((2.0*10^11)/(0.0021m/1.92m)))/Pi...

A steel wire of length 1.92 m with circular cross section must stretch no more than 0.210 cm when a tensile (stretching) force of 390 N is applied to each end of the wire. What minimum diameter is required for the wire? Express your answer in millimeters. Take Young's modulus for steel to be Y...