Solved: Figure 12-29 shows the anatomical structures in
Chapter , Problem 13(choose chapter or problem)
Figure 12-29 shows the anatomical structures in the lower leg and foot that are involved in standing on tiptoe, with the heel raised slightly off the floor so that the foot effec- ~ Calf muscle ~ " Lower leg bones tively contacts the floor only at B point P. Assume distance a = \ "A ;h~ ;;s~~~:~:i:h~ : ~~o;~'r::';~b~ip / ,'7 Of the forces acting on the foot, what are the (a) magni- Fig. 12-29 13. tude and (b) direction (up or down) of the force at point A from the calf muscle and the (c) magnitude and (d) direction (up or down) of the force at point B from the lower leg bones?
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