I have kind of a simple concept from Dynamics that I can't really visualize. Assume that there is a bar on a roller that is spinning (both ends are free; it is rotating about a point near the middle) and translating in the x-direction. Will a force applied to one of the free ends in the x-direction cause the roller to move along the x-direction? It should, according to the equation F=ma (x-direction). But won't this simply cause it to spin about it's center? Thank you.