The cord at B suddenly fails. Treat the beam as a uniform slender rod. The beam has a mass of 145 kg (Eigure 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 negativ value f the angular acceleration is clockwise.

4. 4) The hydraulic cylinder Dextends, moves the rigid rod ABC, and causes the collar A to move with velocity and acceleration both to the left. If the dimensions/₁ 1.0 ft, and /2 = 2.0 ft, vµ = 5.5 ft/s, aµ = 2.1 ft/s², and the angle 0 = 30°, determine the angular acceleration (in rad/s²) of rod ABC. Negative sign must be included if the angular acceleration is clockwise. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Your Answer: 1₁ Answer B 12 ÏÏ a =

For the mechanism in the image below, the end A of the bar is moving downward along the slotted guide with a constant velocity VA = 1.7 m/s. If r = 0.5 m, determine the angular velocity W of bar AB when = 34° . Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point and proper unit. B Your Answer: Answer ω, α units A 0 A y

For the mechanism in the image below, the end A of the bar is moving downward along the slotted guide with a constant velocity va = 2.1 m/s. If r = 0.5 m, determine the angular velocity W of bar AB when 0 = 38°. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point and proper unit. A A ω, α y В