Presentation Information
[9a-E203-1]Gravity proves inertia
〇Takeshi Yamauchi
Keywords:
Gravity,Acceleration,Inertial force
You can create artificial gravity by slowly rotating a huge donut-shaped spaceship in space. The gravity inside is the same force as universal gravitation but acts as an inertial force (centrifugal force). You can also prove this by how people feel when falling. When a person falls, they don't feel an upward inertial force. There is no force that produces inertia other than the resultant of the inertial forces. Not feeling an upward inertial force proves that they are accelerating in the direction of the resultant inertial force. At this time, the acceleration direction and the direction of the resultant inertial force are the same.