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Determine the displacement of the log if the truck at C pulls the cable 4 ft to the right.

Step-by-step

2 s_{B}+\left(s_{B}-s_{C}\right)=l
3 s_{B}s_{C}=l
3 \Delta s_{B}\Delta s_{C}=0
since  \Delta s_{C}=-4, then
3 \Delta s_{B}=-4
\Delta s_{B}=-1.33 ft =1.33 ft \rightarrow

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