A Goniometer can be used to measures angle, angular velocity and angular acceler

Question

A Goniometer can be used to measures angle, angular velocity and angular acceleration of the movements of an elbow and knee. The Goniometer Probe consists of two arms and a potentiometer. As the angle between the arms changes, the resistance of the potentiometer changes. The angle sensor, connected to the probe, measures the resistance of the potentiometer and converts it to an angle measurement. If the measured angular displacement from a knee movement is 90 degree in 2 seconds, what is the average angular velocity?

Explanation / Answer

angular velocity= 1.57/2 = 0.785 rad/sec The Goniometer Probe consists of two arms and a potentiometer. As the angle between the arms changes, the resistance of the potentiometer changes. The Angle Sensor, connected to the probe, measures the resistance of the potentiometer and converts it to an angle measurement. The sensor also calculates the angular velocity and angular acceleration from the rate at which the angle changes. The data is sent digitally to your PASPORT interface at up to 100 samples per second. The probe measures zero degrees (or radians) when it is fully open

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