PASCO ME-6807A Human Arm Model - Manual (Page 26)

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H u m a n A r m M o d e l D e m o n s tr a ti o n s : C o m p l e x M o v e m e n t s
26
“Passing Lift”
1. Set up the arm model with two force sensors as illustrated.
The upper force sensor is attached to the rod clamped to the
model’s base. The lower force sensor will be held in your
hand.
2. Pull the lower force sensor. The shoulder rotates for-
ward and elbow extends to keep the forearm approxi-
mately horizontal.
3. Attach the 100 g mass to the hand and repeat to see
how the additional load affects the muscle forces.
The graph shows data for lifting the 100 g mass.
biceps
triceps
elbow
shoulder