If the angular velocity ω0 = -4j – 3k rad/s of the rotor in Prob. 7/5 is constant in mag...

If the angular velocity ω₀ = -4j – 3k rad/s of the rotor in Prob. 7/5 is constant in magnitude, determine the angular acceleration α of the rotor for (a) Ω = 0 and = 2 rad/s rad/s (both constant) and (b) and Ω = 2 rad/s (both constant). Find the magnitude of the acceleration of point A in each case, where A has the position vector r = 0.5i + 1.2j + 1.1k m at the instant represented.