- #1
Karol
- 1,380
- 22
Homework Statement
A smooth hoop of mass M with 2 beads of mass m each hangs from the ceiling. at t=0 the beads are released from the top and they start sliding down.
What is the mass range M/m for the ring to rise as the beads fall.
Homework Equations
Friction force: ##f=mg\mu##
The Attempt at a Solution
I don't see how the normal forces can raise the ring. when on the upper or lower half of the ring the normal forces pull down the ring. and that's before i consider linear momentum or anything else.