Algebra Help for Bernoulli's Equation

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Homework Help Overview

The discussion revolves around solving Bernoulli's equation for the variable v1, focusing on algebraic manipulation and the challenges associated with terms involving v1 raised to different powers.

Discussion Character

  • Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to isolate v1 in the equation but encounters difficulties due to the presence of v1 terms on both sides. Some participants clarify the powers of v1 involved and suggest factoring techniques to simplify the equation.

Discussion Status

Participants are actively engaging with the algebraic setup, with one providing a potential approach to factor out common terms. There is a sense of progress as clarifications are made, although no consensus on a complete solution has been reached.

Contextual Notes

The original poster expresses frustration over the algebraic manipulation, indicating a struggle with the equation's complexity. There is a correction regarding the intended powers of v1, which may affect the problem-solving approach.

NRasmus1
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Solve for v1

P1 + (1/2)ρv1^2 = P2 + (1/2)(v1r1^s/r2^2)^2

I am attempting to solve this equation for v1, but I am getting stuck on some algebra. How do I solve for v1? I can't figure out how to do it without eliminating v1 altogether because I have a v1^2 on both sides of the equation.
 
Last edited:
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No on the left you have v1^s and on the right you v1^2 so you still have v1 around to solve for.
 
I just caught that! I had intended v1^s on the left side to be v1^2
 
so you're going to get something like

(P1 - P2)

= (1/2v1^2 * r1^2 / r2^2 - 1/2 * p * v1^2)

right?

so then factor out 1/2 and v1^2 then solve for v1
 
I feel like a moron. Thank you very much.
 

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