The cylinders are suspended from the end of the bar which fits loosely into a 40-mm-diam...

The cylinders are suspended from the end of the bar which fits loosely into a 40-mm-diameter pin. If A has a mass of 10 kg, determine the required mass of B which is just sufficient to keep the bar from rotating counterclockwise. The coefficient of static friction between the bar and the pin is = 0.3. Neglect the mass of the bar.