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

srijit

does friction act to make the velocity of a purely rolling body constant by balancing the other net external torque?

  • one year ago
  • one year ago

  • This Question is Closed
  1. Vincent-Lyon.Fr
    Best Response
    You've already chosen the best response.
    Medals 1

    What friction are you talking about? Air friction can act this way, or spinning friction about the axis of rotation.

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

    spinning friction tangential to contact area

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

    In case of pure rolling body on a fixed base, this force is a static friction force and its power is zero. Such a force will never balance any external torque. This is why all systems with rolling bodies can be seen as conservative and solved using mechanical energy conservation.

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

    no i meant to say after an external torque is applied to a purely rolling body friction adjusts itself to prevent slipping of the point of contact..then after sometimes does the velocity becomes constant and friction ceases to act?

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

    "no i meant to say WHILE an external torque is applied to a purely rolling body friction adjusts itself to prevent slipping of the point of contact" – Correct "..then after sometimes does the velocity becomes constant and friction ceases to act?" – If net external torque ceases to exist, velocity will be constant and, although friction is there, the friction force will be equal to zero.

    • 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.