APFIVE Angular Momentum of a Rolling Hoop
A hoop rolls without slipping, and its center of mass has a speed of v. If the radius of the hoop is suddenly reduced to half its original value while its angular momentum is conserved, what is the new speed of the hoop’s center of mass?
A
It increases to 2v
B
It increases to 4v
C
It remains v
D
It decreases to v/2
Question Leaderboard
| Rank | |||||
|---|---|---|---|---|---|
| #1 | nmtnice2010 | 1 | 1 | 0m 00s | 100 |
| #2 | lilianly52 | 1 | 1 | 0m 00s | 100 |
| #3 | dxie26808 | 0 | 4 | 0m 00s | -40 |
| #4 | luke.duff | 1 | 1 | 7m 52s | -372 |
Items per page:
10
1 – 4 of 4