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PASCO ME-6807A Human Arm Model User Manual

Page 32

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H u m a n A r m M o d e l

T e a c h e r ’ s N o t e s

32

Experiment 6: Biceps Force versus Elbow Angle, Constant Forearm Orientation

Typical Result:

Analysis:

1. As the arm

pushes the mass forward,
the elbow angle decreases
(from right-to-left on the
graph). 2. The biceps force
increases.

Experiment 7: Triceps Extension

Typical Results:

Part A, analysis:

1. As

the arm lifts the mass, the
elbow angle decreases.
2. The triceps force
decreases (from
right-to-left on the graph).

Part B, analysis:

The

elbow makes the same
motion as in Part A; how-
ever, in this graph, the tri-
ceps force increases as the
arm lifts the mass.