Moment on a part

I'm trying to design a rather simple L bracket that will hold a flag. The flag is roughly 5 feet long and 2 lbs (in total weight) and will be whipping back and forth as the car accelerates and brakes. I want to simulate this so I can decide how thick/hole placement/etc. of the bracket so it has no chance of failing. How can I do a simple simulation applying a moment along a bar that is mounted in a hole? Am I going to have to use another resource or even run hand calcs?

SolidworksSimulation