"Using this principle, we can build an elevator on the equator with a height exceeding the geosynchronous orbit, where the two forces balance at the geosynchronous point."
Hearing Li Ze continue his explanation, Fang Ran watched him raise a hand to draw, extending a slender rectangle from the inner ring that exceeded the outer ring, marking the intersection point with the outer ring as r0.
He felt a subtle flashback to the feeling of being dominated by physics.
"For the part below the geosynchronous orbit, the radius becomes smaller, and according to the gravity formula GMm/r, the gravitational force is relatively larger. As for the part exceeding the geosynchronous orbit, according to the centrifugal force formula mωr, the centrifugal force is relatively larger."
No, wait, it felt like two very familiar formulas had just appeared.
Watching Li Ze mark the slender rectangles on both sides of the outer ring with red and blue colors to indicate that they were being "pulled" by gravity and centrifugal force in completely opposite directions,
Fang Ran, sweating slightly on the inside, watched him finally look over and speak to him:
"Then, as long as these two parts experience equal forces, the space elevator won't need a supporting force and can stand in space."
Listening to all this, Fang Ran suddenly felt a flash of enlightenment and was awestruck.
"The concept of a space elevator was actually proposed a long time ago, and the relevant principles are already quite well-developed."
Li Ze put away the projection, and the warm light of the campfire returned to the narrow mountain peak, while Klim looked at Fang Ran and added with a smile:
"It was about a hundred years ago that Tsiolkovsky proposed this concept. Today's jet rockets and staged rockets are all ideas he proposed back then."