How Do You Determine Linear and Non-Linear Graphs from Graphical Linearization?

  • Thread starter Thread starter scorpa
  • Start date Start date
  • Tags Tags
    Linearization
AI Thread Summary
The discussion centers on understanding how to determine linear and non-linear graphs from the equation d=Vot+(1/2)at^2 through graphical linearization. Two specific arrangements are proposed: (t^2/d) vs (t/d) and (1/d) vs (t/d^2). To identify linearity, the equation must be manipulated into the form y=mx+b, where y and x are variables, and m and b are constants. The main challenge expressed is confusion about how to substitute the proposed variables into the original equation to analyze their linearity. Clarification on the substitution process and the resulting slope and intercept for linear graphs is sought.
scorpa
Messages
367
Reaction score
1
Hello everyone,

I am stuck on a problem relating to graphical linearization. The way we did it in high school was much easier than here. Anyway here is the question:

There are many ways to graph equation (1) d=Vot+(1/2)at^2, depending on the arrangement of the variables d vs t. However not all graphs are linear. Two different graphical arrangements in the form y vs x are:

(i) (t^2/d) vs (t/d)

(ii) (1/d) vs (t/d^2)

Solve equation (1) for the given y and then compare the rest of the expression to y=mx+b. Which graphs would be linear? Non-linear? In order to be linear, you must have variables and constants in the form y=slopex+intercept where (y,x) are variables and (slope, intercept) are constants. If the graph is linear, what quantities would correspond to the slope and intercept?


Ok, so that is the question. I think my biggest problem is that I do not understand what the question is asking me to do. If anyone could help me out with this I would really appreciate it, usually I at least have an idea of how to start a question but not this time unfortunately. Thanks a lot for any help you can give.
 
Physics news on Phys.org
For (i), it says "let y=(t^2)/d and let x=t/d and see if the equation (1) is algebraically equivalent to one of the form y=mx+b for some constants m and b."
 
Yes, I understood that much but after that I was lost. Am I supposed to somehow plug those variables into the original equation? If so where do I plug them in, and by that I mean where do I substitute those given x and y values into the equation given. Thanks
 
bump**********
 
bumpity bump *cry* :P
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top