1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B What cause the pizza dough go to circular motion

  1. Oct 10, 2016 #1
    my teacher said it is the intermolecular forces between the particle but i don't agree with them so anyone can help me .
     
  2. jcsd
  3. Oct 10, 2016 #2

    phinds

    User Avatar
    Gold Member
    2016 Award

    What makes pizza dough go in a circular motion is the flick of the wrist of the guy who tosses it into the air. I have to believe your teacher was just pulling your leg.
     
  4. Oct 10, 2016 #3
    it think it is the torque
     
  5. Oct 10, 2016 #4
    what mean there the intermolecular force doesn't have any thing to do with circular motion
     
  6. Oct 10, 2016 #5
    i have another question why did it stay in circular motion when it up
     
  7. Oct 10, 2016 #6

    russ_watters

    User Avatar

    Staff: Mentor

    Newton's first Law.
     
  8. Oct 10, 2016 #7
    it don't have any link to intermolecular force
     
  9. Oct 10, 2016 #8
    newton's first law said the object tend to move in straight line
     
  10. Oct 10, 2016 #9
    the teacher said if the body move in circular path he need a force
     
  11. Oct 10, 2016 #10

    A.T.

    User Avatar
    Science Advisor
    Gold Member

    A net force, which is the sum of the inter-molecular forces acting on a piece of dough
     
  12. Oct 10, 2016 #11
    but way it is the inter-molecular
     
  13. Oct 10, 2016 #12
    i don't get it i think it's worng the inter-molecular is attraction between particle and it is not to the center
     
  14. Oct 10, 2016 #13
    and if it the inter-molecular force then it should rotate for ever
     
  15. Oct 10, 2016 #14

    A.T.

    User Avatar
    Science Advisor
    Gold Member

    Most dough particles have no contact to the center, just to other dough particles via inter-molecular forces.
     
  16. Oct 10, 2016 #15

    A.T.

    User Avatar
    Science Advisor
    Gold Member

    It would in space.
     
  17. Oct 10, 2016 #16
    that mean because the inter-molecular force ? and if it the reason why do not other body react in the same way
     
  18. Oct 10, 2016 #17

    A.T.

    User Avatar
    Science Advisor
    Gold Member

    Any body can spin forever in space if the inter-molecular forces provide enough centripetal force. Otherwise it will fly apart.
     
  19. Oct 10, 2016 #18

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    Er... hello? Try just tossing it vertically upwards without any spin? The "intermolecular" forces are still there (or else the pizza dough will fall apart), yet, it is NOT spinning. So how can that be the "cause" of the spin?

    This is one of the most awkward thread that I've come across lately.

    Zz.
     
  20. Oct 10, 2016 #19

    sophiecentaur

    User Avatar
    Science Advisor
    Gold Member

    If it were not for the inter molecular forces, the dough would fly apart. It would not be constrained to move in a circle but it would take a tangential route towards the wall.
    But spinning pizza is complicated and probably not a good model with which to learn the basics. Many of the points raised in this thread are totally valid but they may appear to be contradictory when they're not.
     
  21. Oct 10, 2016 #20

    sophiecentaur

    User Avatar
    Science Advisor
    Gold Member

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: What cause the pizza dough go to circular motion
  1. What causes this? (Replies: 1)

  2. Circular Motion (Replies: 6)

  3. Circular motion (Replies: 1)

Loading...