Ring rolling 1.0 m at 3.0 m/s - how many revolutions?

  • Thread starter Thread starter blink1987
  • Start date Start date
  • Tags Tags
    Revolutions
Join the discussion
Registration is free. Start your own thread to ask a follow-up.
Sign up Log in
1 reply · 2K views
blink1987
Messages
2
Reaction score
0

Homework Statement


Sam drops his ring in the mall. It goes rolling away from him at a velocity of 3.0 m/s. It has a radius of 0.50cm. After rolling 1.0 m how many revolutions has it made?


Homework Equations


vcm= rw


The Attempt at a Solution


vcm
3.0x 2 pi = 18.84
0.50x 18.84= 9.42
 
Physics news on Phys.org

Discussion

Welcome to PF.

How do you see the velocity affecting the number of revolutions?

If the circumference is 2*.5*π ... or π cm, then isn't the number of revolutions the number of circumferences it has traversed? 100 cm / π cm ?