I NEED HELP ASAP!!!! This is the equation: 7(h−3)+4h Please help!
2 answers:
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Answer:
The required height of the cable is 21.25 meter
Step-by-step explanation:
Consider the provided information.
A suspension bridge with weight uniformly distributed along its length has twin towers that extend 85 meters above the road surface and are 800 meters apart.
Let the road surface is the x-axis, and the point (0,0) represents the point that is on the road surface midway between the two towers.
Now it will form an upward parabola whose vertex is at (0,0), one on either side of vertex at a distance x= 400 or x= -400, and y for each of these points is 85.
The equation of parabola is:
Substitute (400,85) in above formula
Therefore, the required equation is
We need to Find the height of the cables at a point 200 meters from the center.
So substitute x=200 in above equation.
Hence, the required height of the cable is 21.25 meter
