Yes, I did in fact do all my calculations for my engineering final before realizing I forgot to convert the inches measurement that was given to me into metric units. Yes, I did have to spend an hour doing them all over again.
For those curious here are the originals:
And here's when i recalculated:
Good thing becuase i was tired at the time, but i don't think my little rubber band car should have a drivechain with a PE(e) of 35.58N/m. For reference, a single newton of force is about the weight of an average honey crisp apple. I don't think my popsicle stick rubber band car should be acting with the potential energy equivalent to 35 and a half apples of weight.
Always check your math, folks.












