Question

The slender bar AB weights 8 kg and moves in the xy plane, with its ends constrained to follow the smooth horizontal and vertical guides as shown in Figure Qi. By assuming the bar AB is initially at rest;
a) Calculate the angular acceleration of the bar.
b) Determine the new angular acceleration of the bar if a 50 N horizontally force is applied at point B.

*i can't upload the diagram*

Answer 1

missing information,
* length AB = 0.8m

Answer 2

without the diagram....