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 ...

This says that an angle-time plot should be a parabolic function. If I fit a quadratic equation to the data, the coefficient in front of the t 2 term should be 1/2 times the angular acceleration (α).

Therefore, the angular velocity of the disk is given by: ω = -ω 0 K + ω disk j. The angular acceleration vector α is simply the time derivative of the angular velocity vector ω: α = dω/dt. In taking ...

Acceleration is defined as the rate of change of velocity (in calculus, this would be the derivative of velocity with respect to time). But velocity is a vector.