0 3. Tube A rotates about the vertical O-axis with a constant angular rate and contains a small cylindrical plug B of mass m whose radial position is controlled by pulling or releasing the cord. If the cord is pulled downward with a velocity V as shown in fig, (Neglect friction) (a) Show all the forces acting in A, direction on the plug B in the figure itself. (b) Write the equations of motion in , direction. ( (c) Find the magnitude of the forces (