Answer:
USE SOCRACTIC IT WOULD REALLY HELP
George used the spring scale. For example: Using a spring scale on an elevator. As you go either up a floor or down a floor the gravity will change the outcome of the scale's measurements.
It allows the current flowing through it to be controlled. It allows it to flow and it can prevent it from flowing. This saves electricity.
If the net force is zero, then there is no acceleration, which means no change in velocity. The velocity starts at zero, so it must remain at zero. Therefore, the object will not move.