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2) An 80-kg Astronaut is training for arriving on a newly discovered planet, Planet X. This new planet has the same radius of earth but

2) An 80-kg Astronaut is training for arriving on a newly discovered planet, Planet X. This new planet has the same radius of earth but double the mass of earth.


While training on Earth, the astronaut wants to simulate his gravitational weight on Planet X by wearing a weighted vest. How many extra kilograms does he need to wear in order to simulate his weight on Planet X? (G= 6.67×10-11 N*m? /kg?, MEarth=5.97×1024kg, REarth =6.36x106m).

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