Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

shubhamsrg Group Title

A cube of side x is moving with velocity u on a horizontal smooth plane. There is a ridge at O. find angular speed of the cube after it hits O

  • one year ago
  • one year ago

  • This Question is Closed
  1. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1357204606212:dw|

    • one year ago
  2. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i know angular momentum will be conserved here but unable to apply it..

    • one year ago
  3. Diwakar Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Apply the conservation of energy. Mu^2/2=Iw^2/2 where I is the moment of inertia about the vertical edge about which it will rotate.

    • one year ago
  4. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so, mu^2 = 2/3 (mx^2) * w^2 w^2 = 3u^2 /2x^2 nopes , not the right ans why you used cons of energy ?

    • one year ago
  5. Diwakar Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Are you sure you are getting the I right?

    • one year ago
  6. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    2/3 mx^2 ..i googled it! though i can derive that also..

    • one year ago
  7. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    :P

    • one year ago
  8. Diwakar Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    what is the correct answer? I will try to solve it at some other time?

    • one year ago
  9. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    though that was an option which came by this method, correct ans is 3u/2x

    • one year ago
  10. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    answer is 3v/4x..

    • one year ago
  11. Diwakar Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @yrelhan4 Did you use Mux/2=Iw

    • one year ago
  12. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yup.. I would be icm + ma^2/2

    • one year ago
  13. Vincent-Lyon.Fr Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Use conservation of angular momentum, not of kinetic energy.

    • one year ago
  14. Vincent-Lyon.Fr Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Moment of inertia about edge is correct.

    • one year ago
  15. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh yes,,3u/4x..got it,,was easy..hmm

    • one year ago
  16. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks all..

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.