- #1
dontdisturbmycircles
- 592
- 3
Homework Statement
A winch at the top of 12 meter high building pulls a pipe of the same length to a vertical position. The winch pulls in rope at a rate of -0.2 meters per second. Find the rate of the vertical change and the rate of the horizontal change at the end of the pipe when y=6.
Homework Equations
http://www.imagehosting.com/out.php/i249658_ahhh.JPG
The Attempt at a Solution
I simply don't have enough information..
I set up an equation relating the three variables..
[tex]s^{2}=x^{2}+(12-y)^{2}[/tex]
and differentiate with respect to time and end up with
[tex]s\frac{ds}{dt}=x\frac{dx}{dt}-(12-y)\frac{dy}{dt}[/tex]
But I simply don't have all of the variables needed. I can solve for x (with pythagorean theorem), but not dx/dt...
Any help is appreciated. :yuck: