Recent content by Jherek

If I put a 1 kg mass on the floor, the floor exerts a 10 N force on it, balancing gravity. If I then replace that mass with a 10 kg one of the same area, the floor now exerts 100 N on it. What is it that makes it exert different forces? I know of Newton's third law of opposite and equal...

Well, I have to say that to me, they both look equally as simple! Especially if we were in the habit of writing \frac{+3}{+4} which we don't so I'll just have to go along with what's expected!

Ah. So that explains why the left-hand side is left untouched. It looks like the right hand side has been multiplied by -1 and that is how I've heard it explained before - but what you say makes more sense! So I wasn't actually wrong as such, just not following convention. Thank you.

Homework Statement Solve for s: -4su+7t+9u+2=6t+4u-9 Homework Equations The Attempt at a Solution My answer: s = \frac{-t-5u-11}{-4u} The given answer: s=\frac{t+5u+11}{4u} I know that the right hand side has been multiplied by -1, but this raises some questions in my mind; Why...