- #1

JoeyBob

- 256

- 29

- Homework Statement
- See attached

- Relevant Equations
- dP/dz = -density*gravity

So since the block is at the bottom there's no pressure pushing it up. To calculate the mass and force of gravity, I multiplied the density of the block by its height and cross sectional area and got 564 kg. Multiplying this by 9.8 I got the force of gravity of 5527.2 N.

Now to find the force of pressure from the water acting on the block I multiplied the waters density by the cross sectional area and height (1.2-0.2) and gravity. This gave 14700.

Adding the two forces I get 20227.2 which ends up being 2.02272 when the answer is suppose to be 8.08.

Now to find the force of pressure from the water acting on the block I multiplied the waters density by the cross sectional area and height (1.2-0.2) and gravity. This gave 14700.

Adding the two forces I get 20227.2 which ends up being 2.02272 when the answer is suppose to be 8.08.