Equation of the path of the particle

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Homework Help Overview

The problem involves determining the equation of the path of a particle in the x-y plane, given its parametric equations x=8sin(t) and y=6cos(t). Participants are exploring the meaning of the path and its representation.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to understand whether the path of the particle refers to the equation of a line connecting specific points or a more complex curve. Some participants clarify that the path refers to the curve formed by the parametric equations.

Discussion Status

Participants are engaged in clarifying the nature of the path and its representation. One participant suggests that the equations represent a parametric form likely leading to a circle or ellipse, indicating a productive direction in the discussion.

Contextual Notes

There is a mention of the range of t from 0 to 2π, which may influence the interpretation of the path. Additionally, a preferred form of the equation is noted, suggesting that there are established conventions in representing such paths.

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Homework Statement


The x and y coordinates of a particle moving in the x-y plane are [tex]x=8sin(t)[/tex] and [tex]y=6cos(t)[/tex]. What is the equation of the path of the particle?


Homework Equations


[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]y-y_1=m(x-x_1)[/tex]

The Attempt at a Solution


I am stuck on how to approach this problem.
I drew a picture:
7jw9usI.png
. Can I use one point as the origin, (0,0) and the second point as (8sint, 6cost) and use the equation of a line to find the 'path' of the particule? I am confused if the path of the particule means the equation of the line?

Any tips and hints would be great. Thanks!
 
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hi skybox! :smile:
skybox said:
Can I use one point as the origin, (0,0) and the second point as (8sint, 6cost) and use the equation of a line to find the 'path' of the particule? I am confused if the path of the particule means the equation of the line?

no, the path of the particle means the curve joining all the points (8sint, 6cost) :wink:

(if you're still stuck, come back for a hint)
 
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tiny-tim said:
hi skybox! :smile:


no, the path of the particle means the curve joining all the points (8sint, 6cost) :wink:

(if you're still stuck, come back for a hint)

Thanks tiny-tim. After some research, looks like this is a parametric equation. Since it has cosines and sines, it will most likely be a circle or ellipse from [tex]0<=x<=2\pi[/tex].

I will try to solve this and post the solution when done. Thanks again!
 
I was able to solve it! Attached is the solution (as an image I did in Word) if anyone is interested.
 

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    solution.PNG
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me! me! i'm interested! :smile:

yes, nicely done :wink:

(btw, for a lot of purposes, the form x2/a2 + y2/b2 = 1 is preferred, so you could have stopped there)
 

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