Tanya is hitting the nail I'm driving at on the head here. I can't see why the work doesn't turn out positive like
Fs cos (theta) says it should. F is a vector in the -x direction; it ought to be -5i, not 5i. The same with dx; it's a vector, and if I am going along a path from x=4 to x=0...
I am trying to find the work done on a particle when a varying force acts on it. I am familiar with W = ∫F dot ds but am running into a sign question.
Suppose a particle is moving in the -x direction because a force is acting on in that direction. Suppose it moves from x = 4 to x = 0, and...
As far as why I bother, let me quote the wiki article on slide rules:
"The spatial, manual operation of slide rules cultivates in the user an intuition for numerical relationships and scale that people who have used only digital calculators often lack.[21] Since users must explicitly...
Hiya folks,
In an effort to get the students in my Advanced Physics class to rely less on calculators and to develop their math skills, I am going to give them the option of using slide rules this year. I am offering them a small bonus on tests if they use slide rules instead of calculators...