PASCO Human Arm Model - Manual, Experiments, Solutions

PASCO Human Arm Model - Manual, Experiments, Solutions - I...

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® Instruction Manual with Experiment Guide and Teacher’s Notes 012-10204A Human Arm Model ME-6807
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Human Arm Model Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Parts of the Arm Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Clamping the Arm Model to a Lab Bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Locking or Limiting Shoulder Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Adjusting the Wrist Angle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Attaching the Mass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Holding a Ball. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Attaching Cords to the Arm Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 How Angles are Measured. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Using Sensors with the Arm Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Replacing the Elbow-stop Pad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Experiment 1: Biceps Force versus Perpendicular Load. . . . . . . . . . . . . . . . . . . . . . . . . 9 Experiment 2: Biceps Force versus Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Experiment 3: Triceps Force versus Perpendicular Load . . . . . . . . . . . . . . . . . . . . . . . 13 Experiment 4: Biceps Curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Experiment 5: Biceps Force versus Shoulder Angle, Constant Elbow Angle . . . . . . . . 17 Experiment 6: Biceps Force versus Elbow Angle, Constant Forearm Orientation. . . . . 19 Experiment 7: Triceps Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Experiment 8: Rotational Inertia of the Forearm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Demonstrations: Complex Movements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Teacher’s Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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Human Arm Model ME-6807 ® 3 1 2 3 4 5 6 7 8 ± 10 1 Included with ME-6807 Replacement Part Number 1. Human Arm Model ME-6807 2. 45 cm Rod ME-8736 3. Sensor-mounting Clamp ME-6808 (Human Arm Model Spares Kit) 4. Sensor-mounting Stud 5. 100 g Mass 6. Hollow Rubber Ball, 57 mm diameter 7. Cord Locks, 2 pieces 8. Cord, 2 90 cm pieces 9. Elastic Cord, 60 cm 10. Tubing for replacing elbow stop pad, 29 cm 11. Thumbscrew and nut for attaching mass Also included with PS-2611 Part Number Angle Sensor PS-2139 Other recommended equipment Angle Sensor PS-2139 Force Sensors (2 recommended) PS-2104 or PS-2189 C-clamp Large Table Clamp SE-7286 (6-pack) ME-9472
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® Human Arm Model Introduction 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
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® ME-6807 Clamping the Arm Model to a Lab Bench 5 Clamping the Arm Model to a Lab Bench The base of the arm model must be clamped to a stable object such as a lab bench. This can be done with a C-clamp or with a model ME-9472 Large Table Clamp. Depending on how you will use the model, you can clamp the base horizontally, verti- cally, or upside down.
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This note was uploaded on 02/08/2012 for the course BMEN 260 taught by Professor Mr.wang during the Spring '12 term at South Carolina.

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PASCO Human Arm Model - Manual, Experiments, Solutions - I...

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