## Thursday, April 23, 2009

### Irodov Problem 1.308

Consider an infinitesimally thin ring section of radius r and thickness dr. The mass of this thin ring section is given by where p is the density of the ring. Each point in this thin ring section experiences a tangential linear acceleration of . When viewed from the reference frame fixed to the ring, this translates to a pseudo force . This pseudo force translates to a pseudo torque . The net torque is then given by,

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