- #1
frozen-pizza
- 7
- 0
Homework Statement
A bridge with a steel framework is 500.000m long on a winter day at 5.0 C. For steel use 11.0x10^-6/ dC a) Find the length of the bridge on a summer day when the bridge temperature is 55.0 C. Keep 6 significant figures in this part and in part b). The bridge is built in the winter with the two ends anchored in rock and it has a hinge at its center. In the summer at 55.0 C the bridge will be raised as shown below. b) How long is one half of the bridge at 55.0 C? c) Find the distance y that the hinge is above its original position when the bridge is at 55.0o C.
Homework Equations
dL=L1*11x10^-6*dC
The Attempt at a Solution
for a i got 500.275 m and for b 250.138, iam having problems with part c
i thought that i could use a 30 30 triangle to find the height but it is not working out