1. Not finding help here? Sign up for a free 30min 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!

Circular motion

  1. Oct 10, 2008 #1
    1. The problem statement, all variables and given/known data
    A particle A moves along a circle of radius R= 0.5 m. so that its radius vector [tex]\vec{r}[/tex] relative to point O on th circumference rotates with a constant angular velocity [tex]\omega=0.4 rad/s[/tex]. Find the modulus of velocity and total acceleration.

    3. The attempt at a solution
    The thing which confuses me is that the modulus of radius vector(relative to point on circumference) keeps changing with time. but [tex]\omega=constant[/tex]

    This means that v changes with time. Am I right?
    Last edited: Oct 10, 2008
  2. jcsd
  3. Oct 10, 2008 #2
    Think about the definition of modulus.
    Does it matter if the direction of the vector is changing?

    Yes, v changes with time, but is the modulus changing?

    modulus can be synonymous with magnitude.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Circular motion
  1. Circular motion (Replies: 4)

  2. Circular Motion (Replies: 4)

  3. Circular motion (Replies: 8)