Question

PRINTER VERSION BACK NEXT Chapter 09, Problem 22 Chalkboard Video Problem A man holds a 172-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the few muscle force which is led perpendicular to the forearm. The forearm weighs 222 N and has a center of gravity as indicated. Find (a) the magnitude of Mand the (1) magnitude and (c) direction as a po angle counterdockwise from horizontal of the force colled by the upper arm bone to the forearm at the elbow it Problem Upper abone Problem 00510

Answer 1

The ret tore at lemom is mo E o Er Tm Procent P = mco oro) cow Person Who Coor10 to 0990). - 22.2 Co-osloto 0990) = 3.108 Nm cw Thos (172) (0.336) 56.76cw 100510)- 3.108 - 56760 = M = 1113-BEN a Ery = fuppears Wenent whell-m - Fun = 22.2 + 172-1173.88 = -979.68N upperoms 1 = 979.68N @ directed down word directim