Question

Asked Dec 3, 2019

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The top of a ladder slides down a vertical wall at a rate of 0.15 m/s. At the moment when the bottom of the ladder is 3 m from the wall, it slides away from the wall at a rate of 0.2 m/s. How long is the ladder?

Step 1

Given,

Step 2

According to Pythagoreans theorem,

Step 3

Differentiate equation (1) with r...

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