$04.$ In a crank$-$rod mechanism. OA $=$ AB $=$ l and the crank $0$A rotates with a uniformw. The rods OA and AB are homogeneous and ofmass m$.$ The mass ofthe slide block atB is also m Determine: the Linear Momentum ofthe system when $($l$)0=45,$and $(2)$p $=60,$ respectively, and discuss whether the conservation oflinear momentum is

satisfied or not