Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

shubhamsrg

  • 2 years ago

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

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

    |dw:1357204606212:dw|

  2. shubhamsrg
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

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

  3. Diwakar
    • 2 years ago
    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.

  4. shubhamsrg
    • 2 years ago
    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 ?

  5. Diwakar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Are you sure you are getting the I right?

  6. shubhamsrg
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

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

  7. shubhamsrg
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    :P

  8. Diwakar
    • 2 years ago
    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?

  9. shubhamsrg
    • 2 years ago
    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

  10. yrelhan4
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    answer is 3v/4x..

  11. Diwakar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @yrelhan4 Did you use Mux/2=Iw

  12. yrelhan4
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

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

  13. Vincent-Lyon.Fr
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Use conservation of angular momentum, not of kinetic energy.

  14. Vincent-Lyon.Fr
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Moment of inertia about edge is correct.

  15. shubhamsrg
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

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

  16. shubhamsrg
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks all..

  17. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.