1. The problem statement, all variables and given/known data I was told by a friend that M1+I1-2=M2 is actually FT=mVf-mVi. So using FT=mVf-mVi to solve the following question.... 3. The attempt at a solution FT=mVf-mVi (F)(0.15)=800(0)-800(5000/3.6) F=-7407.4N Ans is 7407.4N positive. Can I ask did I get my sign wrong?