PASCO ME-6807A Human Arm Model - Manual (Page 4)

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H u m a n A r m M o d e l I n t r o d u c t i o n
4
Introduction
The Human Arm Model simulates the muscles and motion of an actual human arm.
Changes in position are measured at the shoulder and elbow using the two built-in
potentiometers. Cords representing the biceps and triceps muscles attach to the arm.
Students can pull the cords to make the arm move and use force sensors to measure
the forces exerted by the muscles.
This manual includes:
• instructions for setting up the arm model (starting on page 5),
• various experiments (page 9),
• demonstrations of complex movements (page 25), and
• teacher’s notes and sample data for the experiments (page 28).
Parts of the Arm Model
Figure 1: Parts of the arm model
angle
sensor
plugs
base
pulleys
post for
attaching cord
biceps insertion
points
triceps insertion point
forearm
center of
mass
screw for
attaching mass
screw for
locking wrist
cutout for
C-clamp
shoulder
stops
rod clamp
holes for
sensor-mounting
studs