I just wasted an hour arguing about physics with my dad (Ph.D. in physics)...
One of the steps of my argument was that if I applied a force 
F at a point offset from the CoM by a radius 
r, then the linear acceleration would be 
F/m, and the angular acceleration would be I
-1(
F × 
r). Definition.
The thing that was "wrong" was that in the big picture, the force 
F I was applying was not correct for the circumstances. But he wasted an hour of my time because he kept disagreeing with 
a = 
F/m and 
α = I
-1(
F × 
r)  

Also, I had a dream about a girl I miss from high school again 
