The Golden Gate Bridge has a main span length (between the two
towers) of 1.28 km. Imagine that a steel wire with cross-sectional
area 4.00 X 10-6 m2 extends linearly across the bridge deck between
the towers. On the summer day that the wire is laid out the
temperature reaches 35 oC. (a) In the winter, when the temperature
is -10.0 oC, what is the tensile force, F, exerted on the wire?
Assume the Young’s modulus, Y, for steel is 20.0 X 1010 N/m2. Note:
The equation relating Young’s modulus to the force is
? /?
= ?change?/??
(b) Permanent deformation occurs if the stress, S, on the steel
exceeds its elastic limit of Smax = 3.00 X 108 N/m2. (Note, the
stress is defined as S≡Fdef/A). At what temperature would the wire
reach its elastic limit and break
The Golden Gate Bridge has a main span length (between the two towers) of 1.28 km....