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Subrat posted an Question
May 17, 2020 • 01:47 am 30 points
  • IIT JAM
  • Physics (PH)

Wave and oscillation

wave and oscillation. here x=Asin(wt+_phi) or Acos(wt+_phi)

2 Answer(s) Answer Now
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  • comment-profile-img>
    Chandra prakash

    see attached file it's very helpful for you dear

  • comment-profile-img>
    Abhishek singh

    Actually cos(wt) and sin(wt) are not different, they have just a phase difference of π/2. They both can be the solution of a given equation. just the phi will change, rest will remain same.

  • Subrat

    by putting value of x , we get a negative sign. so I confused

    cropped5495607134407636774.jpg
  • comment-profile-img>
    Dhairya sharma

    see attached I gave explanation for both displacement and the velocity of the oscillator.

    cropped4118610433661038882.jpg
    cropped3786826560019341495.jpg
  • comment-profile-img>
    Abhishek singh best-answer

    you can take either! It's totally dependent on initial conditions. if initially partycal is at extream position, then it should be cos(wt) , because cos(0) = 1, but if initially it is at mean position then , it should be sin(wt), because sin(0) = 0. which is mean position.

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