Determine the linear acceleration of the tip of the rod

[shimizua]

Homework Statement

Determine the linear acceleration of the tip of the rod. Assume that the force of gravity acts at the center of mass of the rod, as shown

Homework Equations

So there is a first part to this problem that i already got
A uniform rod of mass M = 5.02kg and length L = 1.08m can pivot freely (i.e., we ignore friction) about a hinge attached to a wall, as seen in the figure below.The rod is held horizontally and then released. At the moment of release, determine the angular acceleration of the rod. Use units of rad/s^2. So i got the right answer for this and it was 13.6 rad/s^2. i just don't know what to do for the second part

The Attempt at a Solution

 

[horatio89]

Linear acceleration is related to angular acceleration by the eqn. r(\alpha) = a