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Question about Gravity

  1. Aug 1, 2011 #1
    First, I am new here, I did a quick search but didn't find the answer I was looking for so if I missed it don't be impolite :)

    I have a "small" question about gravity.
    Would it affect something that had no mass?

    Just a odd/weird example: If I had a car without mass, would gravity affect it?
     
  2. jcsd
  3. Aug 1, 2011 #2
    Everyrhing is affected by gravity because it tends to follow geodesic lines in curved spacetime, regardless of (rest) mass. BTW, ordinary objects, which contain fermions in their composition cannot be massless.
     
  4. Aug 1, 2011 #3
    gravity affects all objects even those particles without mass ( for example, the photon) we can see this in gravitational lensing. When there is an eclipse of the sun, we can see that photons (Light) are attracted by the suns gravitational field :D
     
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