Physics 19 Mechanical Waves (15 of 21) Standing Waves 2: Example

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  • Опубликовано: 3 янв 2025

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  • @curtpiazza1688
    @curtpiazza1688 Год назад +3

    Love the applications to music!

  • @ahmedal-ebrashy3691
    @ahmedal-ebrashy3691 Год назад +1

    Great Video, but one thing am pondering upon and is confusing me. I can increase frequency by increasing string lenght but that will also decrease frequency due to an increase in wavelength. And it will decrease frequency more because velocity is function of the root of L and not L. Regardless Great videos as per usual. And Great editing as per usual

    • @MichelvanBiezen
      @MichelvanBiezen  Год назад +2

      Increasing string length will not affect ther frequency of oscillation. You can only change the wave speed, and that is done by changing the tension on the stribng. You can change the wave pattern, and hence the wavelength by plucking the string in different locations.

    • @ahmedal-ebrashy3691
      @ahmedal-ebrashy3691 Год назад +1

      @@MichelvanBiezen I appreciate your work and your misses work so much professor, thank you 🙏

  • @cvm-xi-2vijayatharishans167
    @cvm-xi-2vijayatharishans167 Год назад +2

    sir actually I got velocity to be 1095.44 and the ten powers add up to 10^5, but the velocity you've given is actually when the ten powers add up tp 10^4

    • @MichelvanBiezen
      @MichelvanBiezen  Год назад +2

      The velocity is correct in the video. Thank you for checking.

  • @cesarc6044
    @cesarc6044 Год назад +1

    Can you use the equation for the speed of the wave and the speed of propagation the way you did in your example? I thought that the value for V1 = ( T/ m/L) and V2 = (lamba) ( frequency), V1 and V2 are not equal because they do not represent the same thing

    • @MichelvanBiezen
      @MichelvanBiezen  Год назад +1

      Those two equations must match. The velocity for both must be the same.

    • @cesarc6044
      @cesarc6044 Год назад +1

      @@MichelvanBiezen Ohhh, okay. Thanks for the clarification

  • @krystofsrsen8655
    @krystofsrsen8655 8 лет назад

    at the end you say that people tune instruments by adding tension but not length. I thought that they increased the length which led to an increase in tension. How does this affect the equation?

    • @MichelvanBiezen
      @MichelvanBiezen  8 лет назад +2

      You cannot increase the length of guitar strings or piano strings. But you will change the frequency of vibration of the string by changing the tension, which changes the speed of the wave on the string.

  • @tonlier7893
    @tonlier7893 6 лет назад +1

    Can you answer me this problem please
    If the time of 0.5 amplitude is 2 second calculate the time of complete oscillation or vibrating
    Reply quickly I'm intersted

    • @MichelvanBiezen
      @MichelvanBiezen  6 лет назад +1

      You can find those answers in this playlist: PHYSICS 16 SIMPLE HARMONIC MOTION AND PENDULUM

    • @tonlier7893
      @tonlier7893 6 лет назад +1

      I don't understand the problem

  • @josephuyo7003
    @josephuyo7003 8 лет назад

    but can we reduce the mass of the string instead.

    • @MichelvanBiezen
      @MichelvanBiezen  8 лет назад +1

      You can't reduce the mass of the string. You can however replace the string with one that has smaller mass. If you do and the other parameters are the same the velocity of the wave will be larger.

    • @josephuyo7003
      @josephuyo7003 8 лет назад

      Yes sir tha was what i meant by my original question. Also, how do we differentiate wave equations by phase differnece? The phi calculation are confusing please i need clearance.

  • @smbdcry
    @smbdcry 9 лет назад

    I feel insecure about the formula..
    Very uncertain that v^2=T/u can be applied to the standing wave? ???....Cuz from video 2, the formula was developed from a wave that the wavelength was so small, the edges of the wave were not touching two ends( concrete/ heavy masses).. Which does not look like a standing wave

    • @MichelvanBiezen
      @MichelvanBiezen  9 лет назад

      Branden Z
      In physics we always fall back on what we know for sure.
      (I tell my students to be careful about their "intuition" because it can be wrong)
      We know that the velocity of a wave on a string is the square root of the tension divided by the mass per unit length