7.3 | Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant

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  • Опубліковано 12 вер 2024

КОМЕНТАРІ • 47

  • @MiguelLopez-tj1br
    @MiguelLopez-tj1br 2 роки тому +40

    My man making this video at 1:00 am for us what a legend

    • @GlaserTutoring
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      My man, Miguel! No time is the wrong time for Physics! 😂😂 Anything to help you out - keep studying hard!

  • @thejesterschagrin
    @thejesterschagrin 3 місяці тому

    This video was awesome, really appreciate your efforts! :)

    • @GlaserTutoring
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      You're welcome! I am so glad that you found this channel and that it is helping you learn Physics. Keep up the great work! 😀

  • @cpskaggs1600
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    I love the openstax books, but have always found it frustrating that there is no answer key to check my work. I love how you break each problem down too when I get stuck on one! thank you for your service!

    • @GlaserTutoring
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      You're welcome! I am so glad that these videos are helping you learn Physics. By learning through a video, you can see the breakdown of a problem in real-time! Keep up the great work and help us spread the word! 😀

    • @dereksavastano
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      @@GlaserTutoring Thank you so much!

  • @alyciawilson4809
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    My peers and I love your videos! You have saved my Honors Physics grade more times than you know :))

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      Thanks so much for the kind words, Alycia! It really means a lot! It makes me happy to know that these videos are really helpful. Keep studying hard! 😀

  • @ravxyainthere7505
    @ravxyainthere7505 3 місяці тому

    damn right. u got too many W's for real teachh

  • @sadlyisuk1737
    @sadlyisuk1737 2 роки тому +5

    This is a great video. Thank you so much for doing these, I seriously learn so much from them!

    • @GlaserTutoring
      @GlaserTutoring  2 роки тому +1

      This is AMAZING! I am so glad that you are learning Physics through these videos. Keep up the hard work and have fun studying! 😀

  • @baconflakes7484
    @baconflakes7484 Рік тому +7

    "it's 1 AM in the morning and I'm a bit tired" - Felt that.

    • @GlaserTutoring
      @GlaserTutoring  Рік тому +1

      Making videos never stop - so while you're up late studying, just know I'm up with you making these videos! Keep up the great work and thank you for being a part of this community! 😀

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    These videos are saving my life, thank you😭🫶🏽

    • @GlaserTutoring
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      I am so glad that you found this channel and that it is helping you in your Physics class. Keep up the great work and thank you for being a part of this community! 😀

  • @baskaran143
    @baskaran143 Рік тому

    Really Appriciate your effort on this whole heartedly. Thank you so much. Watching your video around midnight. ...

    • @GlaserTutoring
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      Thank you for your kind words, Subramani! It's great that you can use these videos at any time of the day. Keep up the great work and thank you for being a part of this community! 😀

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    This is a great channel I really appreciate your work!!

    • @chrstnweyeesee
      @chrstnweyeesee 2 роки тому

      and sense of humor lol

    • @GlaserTutoring
      @GlaserTutoring  2 роки тому

      Thank you for your kind words, Christian! I am so glad that this channel is helping you in learning Physics! Keep working hard and help us spread the word. 😀

  • @ZBKN
    @ZBKN 2 роки тому

    Thank you so much for these videos.

  • @aleenatomy3616
    @aleenatomy3616 11 місяців тому

    thank you so much!!!!

    • @GlaserTutoring
      @GlaserTutoring  11 місяців тому

      You're welcome! I am so glad that these videos are helping you in your Physics class. Keep up the great work and thank you for being a part of this community! 😀

  • @nokuphilasamkelo4571
    @nokuphilasamkelo4571 6 місяців тому +1

    Why the angle is Zero not 180 degrees

    • @ncsncs3316
      @ncsncs3316 6 місяців тому

      because for part B, we are focus on gravitational force, so, we are taking into account the w=mg, weight is pulling down, so it's the considered the force, and the acceleration(pointing up) is pointing the opposite, so on a graph you have 2 different directions, angle wise, it's 180, for part A it's zero because the force is force applied, which is pointing upward, we took everything into account that is acting on it, since the cable is lifted up, its positive Y. since it's upward its w=fdcos( pi/2), which is one, one times a number, its the number. hopefully that helps

    • @GlaserTutoring
      @GlaserTutoring  6 місяців тому

      Team work makes the dream work!

  • @melodychen2851
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    You are a god send 👍👍

    • @GlaserTutoring
      @GlaserTutoring  Рік тому

      Thank you for your kind words, Melody! I am so glad that these videos are helping you in your Physics class. Also, a huge THANK YOU for your support in us and in the channel. The channel would not be where it is without your help - you are greatly appreciated, Melody! 😀

  • @user-qw5tp1ig1y
    @user-qw5tp1ig1y 3 роки тому

    I love your videos so much, thank you for your help

    • @GlaserTutoring
      @GlaserTutoring  3 роки тому

      You're very welcome! Keep working hard! 😀

  • @panzerofzelake3976
    @panzerofzelake3976 Рік тому

    Man you are an absolute gigachad

    • @GlaserTutoring
      @GlaserTutoring  Рік тому +1

      😂 I'm just glad that these videos are helping you in your Physics class. Keep up the great work and help us spread the word in your class! 😀

  • @warrencook9340
    @warrencook9340 2 роки тому +1

    120 in the morning, what a legend

  • @f-4171
    @f-4171 Рік тому

    What about the 100n of friction? Shouldn't c be expressed as w=100n(40)?

  • @charlieshamps9230
    @charlieshamps9230 Рік тому

    How can we have work, if we cant have an upward force - because it isn't accelerating?

  • @iamhannahmontana1153
    @iamhannahmontana1153 2 роки тому

    is the force applied in the cable also the tension?

  • @kalin5518
    @kalin5518 10 місяців тому

    Hello, part c is confusing to me. Is F=0 because there is no acceleration? meaning EF=0? thx

  • @stanleyforlan3545
    @stanleyforlan3545 Рік тому

    Please how did you get the acceleration as 9.8 to get the weight

    • @GlaserTutoring
      @GlaserTutoring  Рік тому

      Hi Stanley! The weight of an object is equal to the mass of the object multiplied by the acceleration due to gravity - which is 9.8 m/s^2. The formula is F = ma. This acceleration is a constant number and should be memorized. Hopefully this helps!

  • @aaryadeshpande1621
    @aaryadeshpande1621 3 роки тому

    8:38 So is the Fg considered positive be default regardless of direction? I did Wgrav = Fg*d*cosΘ = mg*d*cosΘ = (1500kg)(-9.8 m/s²)*40m*cos(180 deg) = -14,700 N * 40m * -1 = +588,000 J. What did I do wrong here? I mean isn't g = negative 9.8 m/s²? But then the cos(180 deg) makes the whole thing positive, which is confusing.

  • @Bunn77
    @Bunn77 4 роки тому

    Is letter c.) zero because the whole lift itself doesn't move?

    • @blackfire6654
      @blackfire6654 3 роки тому +2

      the lift moves at a constant velocity so there's no force. since work is force times distance and force is zero, then work equals zero

    • @Bunn77
      @Bunn77 3 роки тому

      @@blackfire6654 thank you 🙏

    • @GlaserTutoring
      @GlaserTutoring  3 роки тому +5

      Teamwork makes the dream work! 🎉🎉🎉