1.2. Force on Plane Areas

Try these first

1. 1.

   What is the formula for pressure in a fluid?

   Hint

   Remember that pressure depends on depth.

2. 2.

   How does pressure change as you go deeper in a fluid?

   Hint

   Think about the weight of fluid above.

3. 3.

   What happens to pressure as depth increases in a fluid?

   • True
   • False

   Hint

   Think about what retains weight in a liquid.

4. 4.

   How is the resultant force on a submerged surface calculated?

   Hint

   Use the formula F = PA.

5. 5.

   Derive the formula for the center of pressure for an inclined plane and demonstrate it with an example where the plane is submerged at an angle of 30 degrees to the horizontal.

   Hint

   Make sure to account for the angle in your calculations.

6. 6.

   Evaluate the effect of varying fluid density on the resultant force experienced by a submerged plane area.

   Hint

   Remember the relationship between pressure, density, and depth.