Q2:
A bag attached to an intravenous drip holds saline solution that has a density of 2,160 kg/m3.
The bag is 15 cm in height and full to the top. The solution flows from the drip through a
hole of area 0.785 cm2 and passes through the tube into a cannula that has an opening of area
0.0225 cm2.
What is the magnitude of the force exerted by the saline solution at the hole at the base
of the drip bag? Give your answer to two decimal places.
What is the magnitude of the force exerted by the saline solution at the cannula? Give your
answer to three decimal places.
Q3:
A solid object falls through water of density 1,000 kg/m3.
At the instant that the
top of the object is 25 cm below the
water’s surface, the water exerts a pressure on the top, bottom, and side of the
object, as shown in the diagram.