Optional Blog

Early this morning, I saw something that directly relates to what we learned in Physics this last week.  I had decided to run an experiment envolving my History book and a stair climbing machine.  When I placed the book on top of one of the machine's legs, the book did not slide down.  I realized that this was because, as we learned in class, the object's axis has rotated.  This means that the static friction will be equal to (while the object is not in motion) the x value of the weight.  This makes the net force in the x plane equal to zero.  A net force of zero means that the object is not in motion.  In the y plane, we learned that the books normal force is now less.  This is because for a net force of zero, the y value of the weight must be equal to the normal force of the book    This means that the normal force will be less because the y value of the weight is always less than the overall weight.  I was amazed that I could use things that I learned in physics when it came to everyday household items.  I LOVE FRICTION