In physics lab, Charlotte attaches a wireless sensor to one of the spokes of a bicycle wheel spinning freely on its axle. The graph below shows the sensor's height above the ground, in centimeters, over time t, measured in seconds. (1,42), (5,32), (9,42), (13,32)
What is the midline and what does it represent in this context?
The midline is the horizontal line that represents the average height of the sensor above the ground. In this context, the midline represents the equilibrium position or the average height of the sensor when the bicycle wheel is spinning freely on its axle.
