- When Bending To Pick Up A 40lb 178n Weight The Weight Of The Torso Adds Considerably To The Applied Force Especially 1 (137.75 KiB) Viewed 9 times
When bending to pick up a 40lb (178N) weight, the weight of the torso adds considerably to the applied force especially if lifting in an awkward posture. The torso contains approximately 60% of your body weight. The distance from the muscle attachment point to the L5/S1 is approximately 1 in (0.03 m). The distance from the location of the box to the L5/S1 is 20 in (0.5 m). The distance from the center of gravity of the torso to the L5/S1 is 6 in (0.15 m). If 180-lb (800 N) person lifts a box, what will be the required muscle force? H 12" Angle of asymmetry = 0° Î Travel Distance D 12" Weight of Avg. Load 40lb V 6"