Human Arm Model • PS-2611

GREAT DEMO

Extension As the tricep muscle cord is pulled with a Force Sensor, another fixed Force Sensor records the tension in the bicep muscle cord.

Curl
As the bicep muscle cord is pulled a short distance, the end of the arm moves through a very large distance, showing the mechanical advantage of the arm. The load at the end of the arm can be varied.

Extension
As the tricep muscle cord is pulled with a Force Sensor, another fixed Force Sensor records the tension in the bicep muscle cord.

Free Throw
To perform this motion, an elastic cord is used as the bicep muscle cord and the tricep muscle cord are pulled with a Force Sensor. The motion of the arm and the release speed of the ball are measured with the built-in potentiometers using the Angle Sensor.

Angles and Forces During Extension: The upper graph shows the angles of the elbow (violet trace) and the shoulder (blue) as the arm is extended as shown in the picture below. Shown in the lower graph, the bicep tension (red) has little change at first and then rises sharply as the arm reaches out, while the tricep tension (green) rises steadily.

U.S. Educator Price

$615

Mechanical model that simulates the muscles and motion of an actual human arm. To activate the motion students pull on the cord.

What's Included

See the Product Description for this item's included accessories.

What to Consider

See the Buying Guide for this item's required, recommended, and additional accessories.

Human Arm Model

Product Summary

The Human Arm Model simulates the muscles and motion of an actual human arm. To activate the arm motion, students pull on the cord with a Force Sensor. Changes in position are measured at the shoulder and elbow using the two built-in potentiometers plugged into one Angle Sensor (PS-2139), included with PS-2611. From this information, the torque applied when lifting an object can be determined. Also, students can evaluate the work done by the arm in throwing a ball and the resulting kinetic energy delivered to the ball.

The Arm can perform many types of motion such as extending and lifting an object, curling, or throwing a ball overhand. Different arm muscles are activated depending on which pulleys are selected. Static force measurements can also be made to see how the muscle tension changes at various arm positions.

Features

Working Model of the Human Arm
Associate Triceps/Biceps Muscle Action with Arm Motion
Measure Torque Resulting from Lifting Weights
Actually Throws a Ball

What's Included

1x Human Arm Model
1x Arm
1x Angle Sensor PS-2139
1x Angle Sensor
1x Removable Mass
1x Cord & Cord Locks
1x Mounting Bracket with Rod
1x Force Sensor Mounting Rod
1x Rubber Ball

Software Required

This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »

Interface Required

This product requires a PASCO Interface to connect to your computer or device. We recommend the following option(s). For a breakdown of features, capabilities, and additional options, see our Interface Comparison Guide »