The cord at B suddenly fails. Treat the beam as a uniform slender rod. The beam has a mass of 140 kg (Figure 1) Figure 800 N 2 m 2 m 1 of 1 Part A Determine angular acceleration of the beam. Express your answer using three significant figures. Enter positive value if the angular acceleration is counterclockwise and negative value if the angular acceleration is clockwise. Q= 15] 41 Submit Part B Az, Ay= Submit Request Answer Provide Feedback Determine + and y components of the initial reaction at the pin A using scalar notation. Express your answers using three significant figures separated by a comma. vec + | | 11 Request Answer ? vec rad/s ? N 2