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 8.49 m work plank which weighs 113 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=3.44 kg,which he places 0.370 m from where he is standing on the plank (between the two workers).Worker A unfortunately needs to supply 4.70 x 102 N of force to hold the end of the plank.How much does worker B weigh?the acceleration due to gravity is g=9.81 m/s2.