Collar B has a mass of 4 kg and is attached to a spring of constant 1500 N/m and of undeformed length of 0.4 m. The system is set in motion with r = 0.2 m, vθ = 6 m/s, and vr = 0. Neglecting the mass of the rod and the effect of friction, determine the radial and transverse components of the velocity of the collar when r = 0.5 m.

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--- -0.8 m B