A long steel tape measure 9.5 mm wide x 0.20 mm thick having an elastic modulus E = 210 GPa is used to measure the width of a concrete airport runway, which is perfectly flat and exactly 100.000 m wide. In making the measurement, the tape is pulled tight and straight with 40.0 N (~10 lb) force.
(a) If the scale graduations were printed on the tape under zero load and at the same temperature as the measurement is made (20°C), what value will it read (measure) for the actual length of 100.000 m?