Problem 17 .93 The slender 12-kg bar has a clockwise angular velocity of w = 2 rad/s when it is in the position shown Suppose that L=2.3 m 60 Tap image to zoom Part A Determine its angular acceleration, measured clockwise. Express your answer using three significant figures. Enter positive value if the angular acceleration is clockwise and negative value if the angular acceleration is counterclockwise rad/s2 Part B Determine the smooth surface A at this instant. Express your answer to three significant figures and include the appropriate units magnitude of the normal reaction of the NA= Value zzts Submit Give Up Part C magnitude of the normal reaction of the Determine the smooth surface B at this instant. Express your answer to three significant figures and include th e appropriate units Value Units