Fan

After I turned on my fan, I realized that the fan showed uniform circular motion because the blades moved in a circular path at a constant speed. The period of the blades in the fan (the time it takes for the blades to make 1 complete turn) is equal to 2πr/v. The centripetal force on the blades is equal to mvv/r and the centripetal acceleration is equal to vv/r. Because the air was too strong at first, I turned the knob on the side of the fan to reduce the fan speed. The blades slowed down, so the speed was not constant anymore and the motion became just regular rotational motion. This essentially reduced the angular acceleration of the blades, which would be equal to change in angular velocity/ change in time. Well, I guess I can't ever run away from physics...it's everywhere...can't even turn on my fan without thinking about physics concepts and equations...