**the rate of falling ladder**
there is a contradiction between Mathematics and Physics. When a ladder lean over a wall and the bottom point move to the right (in x direction) with constant speed of k, the top of the ladder moves down with the rate of
Vy= -k* x/y
when y approach to the floor then the rate goes to infinity which is physically impossible.
nobody knows how to explain and solve this question. and what is the real rate of y in y=0?
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Last edited by toyota11; Mar 5th 2012 at 05:51 AM.
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