Rod OAOA rotates counterclockwise at a constant angular rate $$$=4$ rad$/$srad$/$s$.$ The double collar BB is pin$-$connected together such that one collar slides over the rotating rod and the other collar slides over the circular rod described by the equation r$=(1\mathrm{.}6$cos$)$mr$=(1\mathrm{.}6$cos$)$m$.$ Both collars have a mass of $0\mathrm{.}75$ kgkg $.$ Motion is in the horizontal plane.