A young work crew is trying to quickly finish some touch-up painting to complete

Question

A young work crew is trying to quickly finish some touch-up painting to complete a job. Rather than setting up a secure work area, they decide to try a shortcut. Worker A will hold the far end of a 8.00 m work plank which weighs 115 N and is secured with a hinge on the opposite end. Worker B will stand on the plank 4.33 m from worker A. Worker B also brings up his paint can, mc = 3.48 kg, which he places 0.310 m from where he is standing on the plank (between the two workers). Worker A unfortunately needs to supply 4.70

Explanation / Answer

470 x 8 = 115/2 * 4 + mg*3.67 + 3.48g * 3.98 m = 94.27 Kg

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