A homogeneous slender bar AB of mass m and length L is released from rest in the position shown in figure below. Assuming that the horizontal plane is friction less.

Determine the 1. acceleration of end A 2. the reaction at A 3. the angular acceleration of the bar immediately after the release. 4. Which of the following statements about the problem is true? - The bar rotates about point A The bar's center of gravity goes straight downwards • The end B does not have any acceleration