HELP Mass per unit length equation

AI Thread Summary
The discussion revolves around deriving the mass per unit length (Mu) from the equation f^2 = mg / (4l^2 Mu) to express it as a gradient for graphing purposes. The user seeks guidance on rearranging the equation to eliminate the square root and isolate Mu. Suggestions include starting with v^2 = T/m and manipulating it to express f^2 in terms of Mu and the experimental variables. The conversation highlights the importance of understanding how to plot the variables correctly to represent Mu as part of the gradient. Overall, the user is looking for clarity on how to effectively visualize the relationship in a graph.
mac b
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Homework Statement



Ok so using the standard equation v = Sqrt(T/Mu)

I want to find Mu as a gradient for the first fundamental.

I've made it into F x lambda = sqrt(T/Mu)

Then f x 2l = sqrt(T/Mu)

Then f= sqrt(T/4l^2 Mu)

As I'm having the tension held by a mass suspended over a pulley.

f= sqrt(mg/4l^2 Mu)

Note: Mu is used to represent mass per unit length.

T is TENSIONMY QUESTION IS:

How do I convert f^2= mg / (4l^2 Mu) into a form where I can get Mu as the gradient?

Thanks.
 
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Any help would be appreciated.
 
Does it usually take this long to get a reply? I thought this forum was active.
If someone can PLEASE help it would really be appreciated.
Thanks.
 
I have concluded that this forum is dead.
 
mac b said:
How do I convert f^2= mg / (4l^2 Mu) into a form where I can get Mu as the gradient?
If you had an equation A = B/(Cx), could you solve for x? Same thing.

(μ is the mass/length. Not sure what you mean when you say you want it 'as the gradient'.)
 
Doc Al said:
If you had an equation A = B/(Cx), could you solve for x? Same thing.

(μ is the mass/length. Not sure what you mean when you say you want it 'as the gradient'.)

I want to make a graph with mass per unit length as a gradient, how do I manipulate that equation to do so?
 
First of all there are several approaches to do this.
I would start by arranging the expression to have no square root.
If you start with v^2 =T/m (m = mass per unit length) can you arrange this to be
f^2 = T/(m4L^2)
There are only 2 experimental variables in your case I think...f and L
Do you knopw what to plot here that would have m as a part of the gradient? It can be tricky depending on your experience with graph plotting and equations of lines !
 
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