1. The problem statement, all variables and given/known data a uniform slender l shaped bar abc is at rest in a vertical plane when two upward forces are applied. knowing that the mass of bar is 20kg, determine the initial angular acceleration of the bar and the initial acceleration of point b 2. Relevant equations 3. The attempt at a solution i've attached the solution for this problem. i just don't get how I = 6.... ive tried using the forumula 1/12ml^2 and using the parallel axis theorem but i don't get 6.