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The car A is used to pull a load B with ...

The car A is used to pull a load `B` with the pulley arrangement shown. If A has a forwed pulley arraangement shown. If A has a forward velcotiy `v_(A)` determine an experssion for the upward velcotiy `v_(B)` of the load in terms of `V_(A)` and `theta, theta` is angle between string and horizontal
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