Pacman
Gudomlig sporthojare
#Olsson# skrev:2660589Eeeh, det är inte 0 gravitation. Det är rotationen runt jorden som motverkar/uppväger. Om de stått stilla så hadde de fallit mot jorden.
Precis.
Lite läsning i ämnet från Wikipedia:
"
Microgravity
At the ISS altitude, the gravity from the Earth is still 88% of that at sea level. The state of weightlessness on the ISS is sometimes explained as a result of the cancellation of the gravitational force by the centrifugal force produced by the ISS orbiting the planet. A more formal explanation is that the state of weightlessness is a result of the fact that the ISS is in constant free fall, which according to the equivalence principle is indiscernable from being in a state where all forces, including gravity, are absent. However, due to (1) the drag resulting from the residual atmosphere, (2) vibratory acceleration due to mechanical systems and the crew on board the ISS, (3) orbital corrections by the on-board gyroscopes or thrusters, and (4) the spatial separation from the real centre of mass of the ISS, the environment on the station is often described as microgravity, with a level of gravity on the order of 2 to 1000 millionths of g (the value varies with the frequency of the disturbance; the low value occurs at frequencies below 0.1 Hz, the higher value at frequencies of 100 Hz or more)."
Länk: http://en.wikipedia.org/wiki/International_Space_Station
, givetvis påverkar jordens dragningskraft på ett stillastående föremål däruppe, men det tänkte jag inte på...