06-07 Ladder slides down the wall

Problem 06
A ladder 20 ft long leans against a vertical wall. If the top slides downward at the rate of 2 ft/sec, find how fast the lower end is moving when it is 16 ft from the wall.

Solution 06

 

Problem 7
In Problem 6, find the rate of change of the slope of the ladder.

Solution 07

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