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Homework Help: Specialy theory of relativity

  1. Mar 12, 2008 #1
    use the equation m=mo/sqrt(1-v^2/c^2) to show that travelling at the speed of light or beyond is impossible.
     
  2. jcsd
  3. Mar 12, 2008 #2
    1. what is the limit of that expression whene v--->c???

    2. what is an immaginary mass???

    think
    marco
     
  4. Mar 12, 2008 #3
    mo is the mass of the object measured in the refrence frame in which it is at rest. m is the mass of the object as measured in a refrence frame moving with speed. in the equation v can never equal to c.....it will....be less because of sqrt 1-v2/c2
     
  5. Mar 12, 2008 #4
    yes bu why u cannot reach c??? what kind of singularity u get??? what does it mean physically???

    ciao
     
  6. Mar 12, 2008 #5

    Dick

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    It's best to think of the m in your equation as the total energy of the object relative to the rest frame (including the E=m0*c^2 energy). So what happens to total energy as v approaches c?
     
  7. Mar 12, 2008 #6
    the energy approches infinity?
     
  8. Mar 12, 2008 #7

    Dick

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    Yessss.
     
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