Human gravity

  1. This question came to me as having an obvious answer yet I dont know. If a human is floating in space they bend spacetime themselves and could technically have small stuff orbit them. Sorry for the dumb question; just been bothering me.
    thanks for any help
     
  2. jcsd
  3. It's all about magnitudes. Just because something is definite and measurable doesn't mean it matters in the long run. I can spit in the ocean all day, but the water will never rise because of it.
     
  4. Redbelly98

    Redbelly98 12,020
    Staff Emeritus
    Science Advisor
    Homework Helper

    Yes, theoretically that is true.

    Quiz question for you: imagine an object (mass M) orbiting a person (mass 80 kg) in a 10m radius orbit. How far from the Earth must the person be, so that the Earth's gravitational pull on the object is 1/10 that of the person's gravitational pull on the object?

    Use Newton's law of gravitation,

    Fgrav = G Ma Mb / d2
     
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