1.4. Problem Solving

Try these first

1. 1.

   What is hydrostatics?

   Hint

   Think about how fluids behave when they are not moving.

2. 2.

   Define buoyancy.

   Hint

   Consider what happens to anything you drop in water.

3. 3.

   Which of the following is true regarding hydrostatics?

   • Pressure increases with depth
   • Pressure decreases with depth
   • Pressure remains constant

   Hint

   Remember the pressure formula P = ρgh.

4. 4.

   True or False: Buoyant force is always equal to the weight of the object submerged.

   • True
   • False

   Hint

   Think about why objects sometimes float and sometimes sink.

5. 5.

   An aquarium is designed with a glass panel measuring 3m by 2m. If the water level is maintained at 5m, calculate the force exerted by the water on the panel.

   Hint

   Always start by calculating the pressure at the desired depth.

6. 6.

   A glass capillary tube with a diameter of 1 mm is immersed in water. Determine the height to which water will rise in the tube if the surface tension is 0.072 N/m.

   Hint

   Remember the significance of the angle of contact in your calculation.