Thanks in advance for the help. Here are the problems: A uniform rod is free to rotate about a frictionless pivot at one end. The rod is released from rest in the horizontal position. What is the magnitude of the angular acceleration of the rod at the instant it is 60 degrees below the horizontal? A uniform meter stick is pivoted to rotate about a horizontal axis through the 25 cm mark on the stick. The stick is released from rest in a horizontal position. Determine the inertia(calculus) and the magnitude of the initial angular acceleration of the stick. I am a first time poster and would greatly appreciate someone's detailed analysis on how to solve these and other similar types of problems. Thanks once again.