Relating y=mx+c and T^2=kd^3+4pi^2l/g

  • Thread starter Natalie Morris
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In summary, the first equation is a generic equation for a line in 2-D space and the second equation relates the period T^2 of a pendulum to the distance d^3 of a yielding support, with k and g being constants that can be determined through experimentation.
  • #1
Natalie Morris
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Homework Statement


Can someone please tell me how these two equations are related

Homework Equations


y=mx+c; T^2=kd^3+4pi^2l/g[/B]
 
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  • #2
The first is just the generic equation for a line in 2-D space. The second does not seem to be related to it at all. Are we supposed to just guess where you got these and why you want to compare them? That is, should we just guess what the context of your question is?
 
  • #3
Natalie Morris said:

Homework Statement


Can someone please tell me how these two equations are related

Homework Equations


y=mx+c; T^2=kd^3+4pi^2l/g[/B]
Hi NM. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif

I don't recognize the kd^3 term. Where did this equation for T^2 come from?

This old thread may hold some answers: https://www.physicsforums.com/threads/shm-pendulum-length-gravity-question.529318/
 
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  • #4
Well we got a pendulum lab to perform and had to relate the period T^2 to the distance of a yielding support d^3. That equation was provided to us to use to determine the values of k and g in the equation, where k was a constant and g was acceleration of free fall
 
  • #5


The y=mx+c equation is a linear equation that represents a straight line on a graph, where m is the slope of the line and c is the y-intercept. This equation is often used to describe the relationship between two variables, where y is the dependent variable and x is the independent variable.

On the other hand, the T^2=kd^3+4pi^2l/g equation is a non-linear equation that represents the relationship between the period (T) of a pendulum and its length (d). This equation is derived from the equation for the period of a pendulum, T=2pi√(l/g), where l is the length of the pendulum and g is the acceleration due to gravity.

To relate these two equations, we can see that both equations involve variables (y and T) that are dependent on another variable (x and d). In the case of the y=mx+c equation, x represents the independent variable that affects the value of y, while in the T^2=kd^3+4pi^2l/g equation, d represents the independent variable that affects the value of T. Additionally, both equations involve a constant (c and 4pi^2l/g) that does not change.

Therefore, we can say that both equations are related in the sense that they represent the relationship between two variables, where one variable is dependent on the other and is affected by a constant. However, the nature of the relationship is different in each equation, with one being linear and the other being non-linear.
 

1. What is the relationship between y=mx+c and T^2=kd^3+4pi^2l/g?

The two equations are related through the concept of proportionality. In the first equation, y represents the dependent variable and is equal to the product of the slope (m) and the independent variable (x) plus a constant (c). In the second equation, T represents the period of oscillation, which is equal to the square root of the product of a constant (k), the cube of the distance (d), and the inverse of the acceleration due to gravity (g). In other words, both equations represent a linear relationship with different constants and variables.

2. How are m and k related?

m and k are not directly related to each other. The value of m depends on the slope of the line, while k depends on the properties of the system being analyzed. However, both m and k are constants in their respective equations and play a crucial role in determining the behavior of the system.

3. What does c represent in the equation y=mx+c?

c represents the y-intercept of the line and is a constant value that determines the starting point of the line on the y-axis. It is independent of the other variables and is also known as the initial value or offset.

4. Can these equations be used to analyze any system?

Yes, these equations can be applied to a wide range of systems as long as they exhibit a linear relationship between the dependent and independent variables. However, the values of the constants (m, c, k) may vary depending on the specific characteristics of the system.

5. How do the constants in these equations affect the behavior of the system?

The constants (m, c, k) play a crucial role in determining the behavior of the system. The slope (m) affects the rate of change of the dependent variable with respect to the independent variable, the y-intercept (c) determines the starting point of the line, and the constant (k) affects the period of oscillation. Changes in these constants can significantly impact the behavior of the system.

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