Question

3) Bicep Curls Your elbow is the pivot point for your forearm. Your bicep attaches to your forearm at 0.05m. Your forearm is nominally 0.35m to the center of your hand, where you hold a weight the Earth on your forearm is 12N. a) Draw a free body diagram and an EFBD for when your forearm is parallel to the ground. b) The system is in static equilibrium. Sum the torques and the forces. Make sure you identify them all. c) Calculate the force that the bicep muscle exerts on the forearm. 450 N d) Calculate the force that the upper arm exerts on the elbow. -379.2 N e) If you did a full rep, where along the curl is the maximum torque exerted? f) Make sure your forces on your FBD and EFBD makes sense.

Answer 1

Fs Fy acling on force auo F3 f4 -12N o-I6m s biep muucle exet on force asm o-35m 乏fy:0 bhe elbow F12x 016 (6xq.8) x 035 F3450 N Ans. l d) " 구0-8-450 : 3792 N C-ve) mian Fy will woik down wads