Two workers carry a uniform 15.015.0-ft plank that weighs 22.0lb22.0 \mathrm{lb}. A load of blocks weighing 165 lb165\ \mathrm{lb} is located 7.00 ft7.00\ \mathrm{ft} from the first worker. How much force does each employee need to use to lift the board and load?


Answered 2 years ago
Answered 2 years ago
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Using the information about the load given in the exercise, we'll draw the free-body diagram of the bridge with load and reaction forces(from supporters) acting at it. We have also to choose point of rotation A.

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