My bad. Playing catch up at the moment and only started looking at this concept today. Another look at the derivative and I can see the manipulation. Thanks for the help
Homework Statement
Hey. I was doing some exam practice questions, but I hit a snag with this one and can't quite work out how to proceed.
A 6kg block at rest is pulled along a horizontal surface by force F→ at angle θ. Given that the coefficient of kinetic friction is 0.15, find the optimal...