stion $1$:

below is a $16\mathrm{.}1$ lb gear B which rolls in a curved, ary, outer ring. Slender rod $AB,1\mathrm{.}2ft$ long an ng $16\mathrm{.}1$ lb$,$ rotates about a fixed pin at A and is tod to the center of the gear B$.$ The link$-$gear is released from rest at the $9$ o'clock position ves down to the $6$ o'clock position as shown. ing has unstretched length $($AC$).$ At the $6$ osition, determine ${}_B$ and ${}_{AB}.$

the moment of inertia calculation, treat the ircular disk.