Bar BC in the figure is of uniform section and weighs 125 N. If disk A rotates clockwise with angular speed of 100 rpm and increases its speed to 200 rpm in 5 seconds. Determine the acceleration of the center of mass of bar BC and the forces exerted on it by the pins at B and D.Suppose that the collar D can slide freely along the bar BC.

 

300 mm 125 mm 500 mm 500 mm