Chapter 26.1, Problem 1bTH

1. A U-tube filled with water is closed on one end. The tube is about one meter tall. When water is removed from the open end, the water level in the closed end does not change.

b. The water level on the left is lowered until it reaches point A.

Does the pressure at point Aincrease, decrease, or remain the same? Explain.

On the basis of your answer, does the pressure at point D increase, decrease, or remain the same? Explain. If the pressure change, how does the change in pressure at point A compare to the change in pressure at point D?

Do the pressure at points E and F increase, decrease, or remain the same? How do the changes in pressure at these points compare to the change in pressure at point A?

Does the force exerted by the stopper on the top surface of the water increase, decrease, or remain the same? Explain.