A wad of clay of mass m1 = 0.49 kg with an initial horizontal velocity v1 = 1.89 m/s hits and adheres to the massless rigid bar which supports the body of mass m2 = 2.13 kg, which can be assumed to be a particle. The pendulum assembly is freely pivoted at O and is initially stationary. The distance L = 0.90 m. Determine the angular velocity ω of the combined body just after impact. Why is linear momentum of the system not conserved?