Understanding Fluid Resistance: The Relationship Between Drag Force and Objects

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    Drag Fluid Resistance
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Discussion Overview

The discussion revolves around the relationship between drag force and objects moving through a fluid, focusing on the formula that describes this relationship. Participants explore the theoretical aspects of drag force, including its dependence on velocity and other factors.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant inquires about a formula to determine the drag force on an object.
  • Another participant asserts that drag is directly proportional to the square of the velocity, presenting the formula Drag = 1/2 CpAv^2, where C is the drag coefficient, p is the fluid density, and A is the cross-sectional area.
  • A participant expresses confusion regarding the constant "c," questioning if it refers to the speed of light.
  • Further clarification is provided that "c" is the constant of proportionality in the drag equation, which varies based on the fluid and object characteristics.
  • A link to additional resources is shared for further exploration of the topic.

Areas of Agreement / Disagreement

Participants have differing levels of understanding regarding the constants in the drag equation, and there is no consensus on the clarity of the explanation provided about the constant "c." The discussion remains unresolved regarding the participants' interpretations of the constants involved.

Contextual Notes

Some assumptions about the fluid properties and object characteristics are not explicitly stated, and the dependence of the drag coefficient on various factors is acknowledged but not fully explored.

itsjustme
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Is there any relationship (formula) that can determine the force of drag to an object. thanks in advance.
 
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Drag is directly proportional to velocity squared. Hence Drag=C * V^2 where c is a constant and v is the velocity of the body relative to the fluid. The usual form is Drag=1/2 CpAv^2. Where C is the drag coefficient, p is the Greek letter rho representing the density of the fluid and A the effective cross sectional area.

Note: Before just asking for a formula try google or wikipedia in future.
 
ok thanks hmm c, i have my doubts about it being the speed of light what constant is it?
 
c would be the constant of proportionality. eg. if y directly varies with x then the relationship between y and x will be y=kx; Where k is a constant whose value is determined to fit a set of data.

http://www.purplemath.com/modules/variatn.htm

In the case above the constant will take the form 1/2 CpA which will be determined by the fluid and object.
 

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