What is the correct area to use in a stress calculation for a compressed object?

In summary, mechanics is the study of the behavior of physical bodies when subjected to forces or displacements. Its different areas include classical mechanics, quantum mechanics, fluid mechanics, and biomechanics. Classical mechanics describes the behavior of macroscopic objects, while quantum mechanics deals with the behavior of microscopic particles. Some practical applications of mechanics include designing and analyzing structures and machines, studying celestial mechanics, and understanding movement and function in biological systems.
  • #1
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Homework Statement



In a simple mechanics question, which area should be used for a stress calculation? ex. A brick is compressed on 2 sides (opposite to each other) by a given compressive force F. The area of each of the sides being compressed is A.

Homework Equations



σ = F/A

The Attempt at a Solution



I'm just confused if it should be σ = F/A OR σ = F/(2A) and why.
 
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  • #2
It's just σ = F/A. I forgot that A is cross-sectional area.
 

FAQ: What is the correct area to use in a stress calculation for a compressed object?

1. What is the study of mechanics?

The study of mechanics is a branch of physics that deals with the behavior of physical bodies when subjected to forces or displacements, and the subsequent effects of these bodies on their environment.

2. What are the different areas of mechanics?

The different areas of mechanics include classical mechanics, which describes the behavior of macroscopic objects, and quantum mechanics, which deals with the behavior of microscopic particles. Other areas include fluid mechanics, which studies the behavior of fluids, and biomechanics, which applies the principles of mechanics to biological systems.

3. What is classical mechanics?

Classical mechanics is a branch of mechanics that describes the behavior of macroscopic objects, such as everyday objects, using the laws of motion and principles of energy and momentum. It is based on the work of Isaac Newton and is still widely used in many fields of science and engineering.

4. How is quantum mechanics different from classical mechanics?

Quantum mechanics is the branch of mechanics that describes the behavior of particles at the atomic and subatomic level. It differs from classical mechanics in that it takes into account the wave-like nature of particles and the uncertainty principle, which states that it is impossible to know both the position and momentum of a particle with absolute certainty.

5. What are some practical applications of mechanics?

Mechanics has numerous practical applications in various fields, including engineering, physics, and biology. It is used to design and analyze structures and machines, such as buildings, bridges, and vehicles. It is also used in the study of celestial mechanics to understand the motion of celestial bodies. In biology, mechanics is used in the study of movement and function of organisms and their biological systems.

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