Question

1. A circular wine barrel 80 cm in diameter will burst if the net upward force exerted on the top of the barrel is 663 N . A tube 1.2 cm in diameter extends into the barrel through a hole in the top, as indicated in the figure(Figure 1). Initially, the barrel is filled to the top and the tube is empty above that level.

What weight of water must be poured into the tube in order to burst the barrel?

2.   As a storm front moves in, you notice that the column of mercury in a barometer rises to only 736 mm . You may want to review

What is the air pressure?    If the mercury in this barometer is replaced with water, to what height does the column of water rise? Assume the same air pressure found in part A.

Answer 1