End A of the 6-kg uniform rod AB rests on the inclined surface, while end B is attached to...

End A of the 6-kg uniform rod AB rests on the inclined surface, while end B is attached to a collar of negligible mass which can slide along the vertical rod shown. Knowing that die rod is released from rest when θ = 35° and neglecting the effect of friction, determine immediately after release (a) the angular acceleration of the rod, (b) the reaction at B.

Fig. P16.115