Answer Happy

Please watch the short video clip I took from a ceiling fan being turned off; then do the following: 1- Describe what is happening using words:initial velocity, final velocity, acceleration, etc. 2- Write the formulas governing the situation. 3- Having nothing but the video, solve the equation(s) and find the amount of acceleration that made the fan stop. (hint: can you measure time elapsed from when it was turned off (you hear the click) to when it was completely off? Also can you figure out the initial rotational speed? For example can you count how many complete rotations are in one second? can you relate the rotation to 360 degrees in a circle? If the rotation in one second is not complete, can you use the number of blades and the angle in each section for that?) Write up one page (or two) with diagram, formulas, and your numbers.