The weight of the astronaut is equal to the force of gravity the astronaut feels that depends on the mass of the planet.
Because the mass of the Earth is different than that of Jupiter, Saturn and Mars, the astronaut's weight will change when he/she travels to either planets.
The turns ratio is equal to the voltage ratio. Let n1 and n2 be the primary and secondary turns. Then 5850V/120V=n1/n2 48.75=2680/n2 n2=2680/48.75 n2=55
