Interesting Math Problem
My recent studies of mathematics have allowed me to solve some very interesting problems. One type of problem has to deal with multiple rates of change that are related each other through some sort of geometric construct.
In Calculus terminology we call these types of problems “Related Rate Problems”.
The following is a “Related Rate Problem” of my own making. You can offer guesses / answers in the comments section.
In the near future I’ll post my solution to the problem along with some reasons for why knowing the mathematics behind this problem thrill me.
Until then, ENJOY!
Problem:
A tall young man is walking down a hall with florescent ceiling lights and waxed tile floors. The youth notices that the reflection of each ceiling light moves as he approaches the spot directly beneath the ceiling light’s fixture.
If the light fixtures are 10 feet above the floor, and the young man’s eyes are 6.0 feet above the floor, and the young man is walking at a rate of 2.5 feet per second, then how fast is the distance between the student and the point of reflection changing.
Note: according to Fermat’s Principal it can be deduced that the light will be reflected off the floor at the same angle that it approached the floor. Thus, we are working with two similar triangles. One triangle being between the ceiling light, spot beneath the ceiling light and the point of reflection, and the other being between the young man’s eyes, spot beneath his eyes and the point of reflection.
