Blogpost #9

This week we learned about forces and how to draw free body diagrams. In essence, a force is a just push or a pull. Depicted in the picture above are two books, one on top of the other, both on a bed. There would be two free body diagrams for this picture. The first would be for the America's History book, on top. From its center, there would be a arrow (a vector) down, labeled mg, or weight. An arrow of the same size would be drawn upwards and labeled N, for normal force (aka "support force" or the force perpendicular to the surface that the object's on). The Precalculus book would have an arrow drawn up, labeled N. And two arrows drawn down (both of equal size), labelled m1g and m2g (which would represent the weight of both books).