A cube of unknown material is 0.200 m on each side and has a mass of 17.6 kg. It is suspended in a vat of honey (densityh=1.42 x 103 kg/m³) so that its top surface is at a depth of 2.00 m below the surface of the honey (see figure-not to scale). What is the magnitude of the buoyant force on the cube from the honey?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
![**Question:**
A cube of unknown material is 0.200 m on each side and has a mass of 17.6 kg. It is suspended in a vat of honey (density \(\rho_h = 1.42 \times 10^3 \, \text{kg/m}^3\)) so that its top surface is at a depth of 2.00 m below the surface of the honey (see figure—not to scale). What is the magnitude of the buoyant force on the cube from the honey?
**Answer Choices:**
A) 13,900 N
B) 0 N
C) 78 N
D) 111 N
**Figure Explanation:**
The figure illustrates a cube submerged in honey, with the top surface of the cube situated 2.00 meters below the surface of the honey. The side of the cube is 0.200 meters long. A stick appears to suspend the cube within the honey.
**Solution:**
The magnitude of the buoyant force (\(F_b\)) on the cube can be determined using Archimedes' principle, which states that the buoyant force is equal to the weight of the displaced fluid.
First, calculate the volume (\(V\)) of the cube:
\[ V = \text{side}^3 = (0.200 \, \text{m})^3 = 0.008 \, \text{m}^3 \]
Next, calculate the weight of the honey displaced by the cube. The density of the honey (\(\rho_h\)) is given as:
\[ \rho_h = 1.42 \times 10^3 \, \text{kg/m}^3 \]
The weight of the honey displaced is the product of the volume of the cube, the density of the honey, and the acceleration due to gravity (\(g\)), which is approximately \(9.8 \, \text{m/s}^2\):
\[ F_b = \rho_h \times V \times g \]
\[ F_b = (1.42 \times 10^3 \, \text{kg/m}^3) \times (0.008 \, \text{m}^3) \times (9.8 \, \text{m/s}^2) \]
\[ F_b = 111.104 \, \text{N} \]
Therefore](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3fc0f41c-1d8b-41a4-aee9-3a82e03a5afd%2Fbc2e2963-ddf4-4cf6-963a-44344aaa4076%2F5erjx7m.png&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![College Physics](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)
![University Physics (14th Edition)](https://www.bartleby.com/isbn_cover_images/9780133969290/9780133969290_smallCoverImage.gif)
![Introduction To Quantum Mechanics](https://www.bartleby.com/isbn_cover_images/9781107189638/9781107189638_smallCoverImage.jpg)
![College Physics](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)
![University Physics (14th Edition)](https://www.bartleby.com/isbn_cover_images/9780133969290/9780133969290_smallCoverImage.gif)
![Introduction To Quantum Mechanics](https://www.bartleby.com/isbn_cover_images/9781107189638/9781107189638_smallCoverImage.jpg)
![Physics for Scientists and Engineers](https://www.bartleby.com/isbn_cover_images/9781337553278/9781337553278_smallCoverImage.gif)
![Lecture- Tutorials for Introductory Astronomy](https://www.bartleby.com/isbn_cover_images/9780321820464/9780321820464_smallCoverImage.gif)
![College Physics: A Strategic Approach (4th Editio…](https://www.bartleby.com/isbn_cover_images/9780134609034/9780134609034_smallCoverImage.gif)