1. The problem statement, all variables and given/known data Two tugboats are pulling a large log, as shown in the following diagram. The log has a mass of 250 kg and is initially at rest. How far have the tugboats moved the log after 10 s? http://imgur.com/GS7Y80x 2. Relevant equations c^2=a^2 + b^2 -2ab cosC sin A/ a= sin B/ b= sin C/ c Fg=G m1 m2/d^2 F=ma d=1/2 a t^2 3. The attempt at a solution c^2=(400 N)^2 + (800 N)^2 -2(400 N)(800N)cos150 c=1164 N sin A/ 400 N= sin150/ 1164 N A=sin^-1 (400N sin150/1164N) A=10 degrees Here's where I'm having the most trouble, in my book it shows that you subtract the 20 degrees from angle A (10 degree angle). I don't understand this, how does it reflect the angle to which the net force is applied to? So my answer for the first part is 1164 N [ N 10 W].