Physics Ch. 13 Moment of Inertia Application (7 of 7) ERROR! 2 Pulleys both with Mass "REDO"

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  • เผยแพร่เมื่อ 23 ธ.ค. 2024

ความคิดเห็น • 25

  • @Unidentifying
    @Unidentifying 2 ปีที่แล้ว +4

    Flying butter is asking, system not in equilibrium or constant motion, m has acceleration downward? How sigmaF=0?

    • @MichelvanBiezen
      @MichelvanBiezen  2 ปีที่แล้ว +3

      You are correct. My approach can work, but I left out the "Ma" term. The force down should be mg - ma - Ma or mg + Mg - T1 - T2 = ma + MA. This video is definitely a "redo". Thanks for pointing that out.

    • @Unidentifying
      @Unidentifying 2 ปีที่แล้ว +2

      @@MichelvanBiezen all good sir, if theres a mistake from you, its only giving a man hope and dreams

    • @MichelvanBiezen
      @MichelvanBiezen  2 ปีที่แล้ว +3

      We all make mistakes. That is part of being human. A viewer usually will catch it. 🙂

  • @Aristothink
    @Aristothink 2 ปีที่แล้ว +1

    If the second pulley has mass, its mass should be considered when you did T1+T2-(mg-ma)=0 at (4m30sec). Instead of being m shouldn't it be m+M ? Besides at your final acceleration formula, at 4m45sec, when you make m=0, a=0, but if the pulley has mass it will still fall down even without the mass m, right ? By the way, great explanation, as always ! :)

    • @MichelvanBiezen
      @MichelvanBiezen  2 ปีที่แล้ว +2

      You are correct, that there are some errors, we'll have to reshoot this video. 🙂

    • @Austin1990
      @Austin1990 2 ปีที่แล้ว

      @@MichelvanBiezen
      I believe the answer comes out to:
      a=(m+M)/(m+3.5M)*g
      It is basically a free fall problem, but the mass is slowed down by the rotational inertia of the pulleys. If mass m is 50lbs and each pulley is 1lb, the mass will fall at 95% the free fall acceleration. I would have guessed that the pulleys were more negligible than that. But, they would be more negligible in a more typical pulley problem.

  • @April-lh3rm
    @April-lh3rm 5 หลายเดือนก่อน

    is the acceleration constant?

  • @pranavamali05
    @pranavamali05 2 ปีที่แล้ว +1

    Thnku

  • @norensensimanjuntak8194
    @norensensimanjuntak8194 2 ปีที่แล้ว +2

    Thank sir🙏

  • @dlrmfemilianolako8
    @dlrmfemilianolako8 2 ปีที่แล้ว +2

    Its very interesting video

    • @MichelvanBiezen
      @MichelvanBiezen  2 ปีที่แล้ว +2

      Yes, but not the error I made. We'll have to reshoot this video.

    • @dlrmfemilianolako8
      @dlrmfemilianolako8 2 ปีที่แล้ว +3

      @@MichelvanBiezen no problem professor . Noone is perfect . We learn from our mistakes .

    • @dlrmfemilianolako8
      @dlrmfemilianolako8 2 ปีที่แล้ว +3

      @@MichelvanBiezen professor i have an idea for those videos where you have made mistakes . why not change the title and make these videos " misteries " .That is, to let students find the mistakes (because they probably learn more like that ) not exactly learn more but put their learnings in " action " . What do you think ?

    • @MichelvanBiezen
      @MichelvanBiezen  2 ปีที่แล้ว +2

      Yes, we usually leave them in for that purpose and then we'll reshoot the video with the correct solution.

    • @dlrmfemilianolako8
      @dlrmfemilianolako8 2 ปีที่แล้ว +2

      @@MichelvanBiezen very good . 😉😁👍

  • @mustafasalihkaya692
    @mustafasalihkaya692 2 ปีที่แล้ว +2

    🙋

  • @erbyghazar7372
    @erbyghazar7372 ปีที่แล้ว +1

    You are wonderful as always

  • @fizixx
    @fizixx 2 ปีที่แล้ว +1

    🙂

    • @MichelvanBiezen
      @MichelvanBiezen  2 ปีที่แล้ว +2

      Glad you liked it.

    • @fizixx
      @fizixx 2 ปีที่แล้ว +1

      @@MichelvanBiezen 👍