Posted by **jared ** on Friday, November 5, 2010 at 10:36am.

a suspenion bridge is in a shape of a parabola and has a length of 3000 feet between the uprights. the roadbed is 50 feet above the river and the lowest point of the curved cable is 25 feet above the road. if the height is 450 feet, how long is the vertical support cable that is located halfway between an upright and the center of the bridge?

- calculus -
**bobpursley**, Friday, November 5, 2010 at 11:37am
y=a(x-1500)^2+b is the form of the equation.

you need to solve for a, b. Well, you know immediately that at x=1500, b has to be 25

Now, at x=0, you know y=450. Solve for a.

Now, with a,b solve for y when x=750

What is the calculus in this?

- math -
**mariam**, Wednesday, February 5, 2014 at 7:09am
a parabolic bridge over a road is 4 meter tall 4 meter wide and 5 meter long determain the maximum height of a 2 meter truck can drive under the bridge

## Answer this Question

## Related Questions

- precalculus - one section of a suspension bridge has its weight uniformly ...
- Algebra II - I'm confused.. 1. The cables of a suspension bridge are in the ...
- algebra - You live near a bridge that goes over a river. The underside of the ...
- calculus HELP! - A person stands on a bridge that is 100 feet above a river. If ...
- math calculus - A person stands on a bridge that is 100 feet above a river. If ...
- math - The longest steel arch bridge is the new river gorge near fayetteville,...
- algebra - You live near a bridge that goes over a river. The underside of the ...
- physics - a bungee cord jumper jumps off the new river bridge. the bridge is 876...
- Physics - The Royal Gorge bridge over the Arkansas River is 310.0 m above the ...
- algebra - You live under a bridge that goes over a river. the underneath side of...

More Related Questions