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ISS is in freefall though, which simulates 0G. Yes technically gravity is almost as strong as on the surface where ISS orbits, but there is no normal force oppo
by scrumbledober 8y ago
ISS is in freefall though, which simulates 0G. Yes technically gravity is almost as strong as on the surface where ISS orbits, but there is no normal force opposing gravity.
- jsjohnst 8y agoActually, the ISS isn’t in “freefall” either. Further, there definitely is a normal force (inertia) opposing gravity too, otherwise without that (and the occasional thruster burns needed due to drag from the atmosphere), it wouldn’t “continually fall and then miss the ground” as it’s normally described in layman terms. There’s plenty of sources to back up what I said previously and here, but this provides a great description of why it’s wrong to say the ISS is in freefall: https://www.quora.com/Is-ISS-considered-to-be-in-gravitational-freefall https://www.quora.com/Is-ISS-considered-to-be-in-gravitation...