mass of 1, radius 1 like the surface of the earth has gravity of just the one. If the radius is increased to 3 the gravity is 1/9th while the lift of centrifugal force is increased to 3, if a connection holds the mass to the near radius like a centrifuge. Imagine just an airship, it has a lifting force of the power of the air above and the lesser force of you or muffy the feline in the airship room, right after lunch, I’m the optimist mom loves! Let the lift be much like the centrifugal force on a mass, say a captured comet or for more practical use in our own time, say a leftover starship or dish. If in geosynchronous orbit, the heavy mass higher up has greater lift because of the distinction between gravity and centrifugal force by the simple law above, known to many college physics marms. If the two masses are connected by a tether that wouldn’t have to be nearly so strong as the space elevator, and much cheaper, the distinction between the heavy and light forces would be greater. We have the two in balance like the airship. To make the ship rise, remove some of the stuff like weight of the lower compartment, and the ship will rise, now it’s sailing up faster and faster. Next lower the tether down at high speed and cinch it to another heavier weight, which the higher mass now at higher radial speed can lift because of its faster motion, it lifts this third weight and the radial velocity of both slows, but by this time the third weight is at high enough orbit that it too has greater centrifugal force than the gravity, and so it’s been lifted at almost no cost for the rocket fuel, and has better safety record, or safety mp3 at any rate. To restart the process, lower the tether down and find another payload and repeat indefinitely! Airships can lift almost a much as the space shuttle, and they’re much safer and cheaper, this more general sort of use of the same type of physics is more general, so by a like sort of momentum relay and the use of tethers, the lift could reach much higher, and the advantages the same. This use of the one tether could also be used to generate a lot of energy too by using generators attached to the tether on the weights so the jostling of the wires make power much like some have hoped for airships cinched to the earth or underwater airships to generate power of the ocean’s oscillation.