Today in class we first went over the homework from over the weekend (page 192 55-60). Mr. Ebersole checked it for completion and went over problems that we needed help with. Then we got to work on the spring work POGIL. In this POGIL we found out that the equation for the work done by a spring moving from Xf to Xi is ½ k(Xi^2-Xf^2). We also learned that the potential energy stored in a spring that is compressed or stretched is U= ½ kx^2. Using these equations we found that the work done by a spring and the change in potential energy is equal, and that the sign of x does not affect the work done in a spring. If we did not finish this POGIL in class, it is homework, due tomorrow. We also have the Home Energy Survey: Part 2 and page 193 #63-67 due tomorrow. In our class the computer was frozen for a while during the first few minutes of class.
QOD: Why is the definition "work = force x distance" not always true?
I think that the answer would be that there could be more than one force acting on it, like friction or gravity, or that it could be at an angle. I am not positive if this is the correct answer though.
No comments:
Post a Comment