Shown in right video is the TOTAL angular velocity vector (MAGENTA) of the rotor, which is the vector sum of the red and blue angular velocity components. Note that the magnitude of the total angular ...

To compensate and keep angular momentum constant, the washer's angular velocity has to increase. The reverse happens when you loosen the string and allow the washer to move out farther.

The University of Virginia is investigating the use of a magnetohydrodynamic (MHD) angular rate sensor to measure head angular acceleration in impact testing. Output from the sensor, which measures ...