A circular wine barrel 75 cm in diameter will burst if the netupward force exerted on the top of the barrel is 6490 N. A tube 0.8 cm indiameter extends into the barrel through a hole in the top, asindicated in the figure below. Initially, the barrel is filled tothe top and the tube is empty above that level. What weight ofwater must be poured into the tube in order to burst thebarrel?
N