Thanks very much. Seriously - take this explanation and forward it to every high school physics instructor everywhere. Countless generations will sing your pra

Thanks very much. Seriously - take this explanation and forward it to every high school physics instructor everywhere. Countless generations will sing your praise. PS: Apparently they aren't called tilt-a-whirls, but RoundUps. And they are a lot of fun. https://www.google.com.sg/search?q=round+up+amusement+ride&source=lnms&tbm=isch&sa=X&ei=6D0mVbe_CoOpuQSdroHoDA&ved=0CAcQ_AUoAQ&biw=1435&bih=739 https://www.google.com.sg/search?q=round+up+amusement+ride&s...