Solve Lissajou's Figure Problem with 1:2 Frequency Ratio

  • Thread starter Thread starter Amith2006
  • Start date Start date
  • Tags Tags
    Figure
AI Thread Summary
The discussion revolves around solving a Lissajou's figure problem with a frequency ratio of 1:2, where the phase difference is unspecified. Participants note that this could lead to either a parabola or a figure-eight shape, creating confusion since both options are presented. Clarification is sought regarding the orientation of the figure-eight, with suggestions that it may need to be aligned in a specific way. Ultimately, the consensus leans towards the figure-eight being the correct representation rather than the parabola. The conversation emphasizes the importance of understanding phase differences in determining the correct Lissajou's figure.
Amith2006
Messages
416
Reaction score
2

Homework Statement



The problem in which I have difficulty has been posted as an attachment. It is based on Lissajou's figure. In the given problem, the ratio of the frequency is 1:2 but nothing has been mentioned about the phase difference. As far as my knowledge goes, the corresponding Lissajou's figure can either be a parabola or a figure of eight. The difficulty that I am facing is that, both the options are given. Is there any additional information that I have failed to notice in the question? Any help is most welcome.


Homework Equations




The Attempt at a Solution

 

Attachments

  • untitled.JPG
    untitled.JPG
    17.7 KB · Views: 397
Physics news on Phys.org
Amith2006 said:

Homework Statement



The problem in which I have difficulty has been posted as an attachment. It is based on Lissajou's figure. In the given problem, the ratio of the frequency is 1:2 but nothing has been mentioned about the phase difference. As far as my knowledge goes, the corresponding Lissajou's figure can either be a parabola or a figure of eight. The difficulty that I am facing is that, both the options are given. Is there any additional information that I have failed to notice in the question? Any help is most welcome.


Homework Equations




The Attempt at a Solution


If it were a figure 8, which way would the figure 8 be oriented?
 
As I read the question, three could be more than 1 correct option, but take good look
at that figure 8.
 
Do u mean that the figure 8 should have been aligned in the horizontal plane? Hence the more appropriate answer is the parabola. Am I heading in the right direction now?
 
Amith2006 said:
Do u mean that the figure 8 should have been aligned in the horizontal plane? Hence the more appropriate answer is the parabola. Am I heading in the right direction now?

It's not a parabola, but about the figure 8, yes.
 
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...
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top