Ball-and-Bearing Motion Sensor Assembly, San Francisco State College

The Ball Support System:

• You can clearly see a spherical mount or cup assembly below the ball, allowing free 3D rotation while keeping the ball loosely suspended.

• The lower support likely allows friction-minimized movement—key for demonstrating inertial motion.

Rotational Sensing Components:

• Those Small mounts with what look like bearing tips or encoder wheels likely track:

  • Yaw, pitch, roll movement

  • Or possibly lateral force or displacement on the ball

• This arrangement would convert physical motion into analog or early digital signals via potentiometers or magnetic pickups.

Signal Wires:

• The bundle of lead wires confirms the ball's movement was measurable, not just mechanical.

• These probably feed to a meter, oscilloscope, or control panel for live feedback.

Credits: 

Some technical descriptions and historical interpretations were developed with the assistance of ChatGPT, an AI language model by OpenAI.