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  • A ladder 10 m long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1 m/sec how fast is the top of the ladder sliding down the wall when the bottom of the ladder is 6 m from the wall ?

A ladder 10 m long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1 m/sec how fast is the top of the ladder sliding down the wall when the bottom of the ladder is 6 m from the wall ?

Answers (1)

best_answer

x=6 m

y^2=10^2-6^2=100-36

y=8 m

We solve this problem by short trick 

v_top imes y=v_bottom imes x

v_top imes 8=v_bottom imes 6

v_top imes 8=1 imes 6

v_top=0.75 ;fracms

Posted by

Deependra Verma

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