rotational acceleration is proportional to torque, and i write a "t" like that, it's a greek letter, "tao." why we do that is because in advanced physics books, you get those symbols, and we might as well all talk the same language. so all we're saying now is if you want something to rotationally accelerate, you apply a torque to it. remember the torque will make things spin, a twisting force and that's all we are saying here. but remember something else too that how much acceleration you get depended not only on force but something else. and see if your neighbor doesn't know what the something else is. not only how hard you push, but da-da-la-la-la-la-la. check your neighbor "a". how many say it begins with an "m"? all right, let me give you a hint. rhymes, it starts with "m" ends with... [laughter] what is it gang? mass, mass. you hear me? okay, come on, we know that. come on, don't be shy. in fact, if we put the correct units in, we can say acceleration is equal to those two. it's equal to the ratio of force to mass. we talked about this before. now we're talking about something analog
