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The pulley arrangement shown is designed for hoisting materials. If BC remains fixed while the plunger P is pushed downward with a speed of 4 ft/s , determine the speed of the load at A.

Step-by-step

5 s_{B}+\left(s_{B}-s_{A}\right)=l
6 s_{B}s_{A}=l
6 v_{B}v_{A}=0
6(4)=v_{A}
v_{A}=24 ft/s

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