- #1

a1234

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## Homework Statement

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A rectangular object has a width of 40 meters, height of 15 meters, and length of 2 meters. It floats consistently when 3 meters of its height is below the surface of the water.

1. Find the volume of the displaced water.

2. How much is the buoyant force on the object?

3. What is the object's weight?

4. What is the mass density of the block?

5. How would the amount of the object under the surface change if it were floating in vegetable oil?

**2. The attempt at a solution**

1. This is 40*15*2, or 1200 m^3.

2. This is 1000*240*9.8, or 2352000 N.

3. Same as part 2.

4. Since weight/g = mass...

2352000/9.8 = 240000

Since density=mass/volume...

240000/1200 = 200

I'm not sure of the units to use on these two.

5. Am I supposed to use the density of vegetable oil instead of water in step 2?