Homework Help Forum: physics - forces

Posted by Shane on Tuesday, November 3, 2009 at 9:11pm.

Calculate the velocity of a satellite moving in a stable circular orbit about the Earth at a height of 2600 km.

• physics - forces - bobpursley, Tuesday, November 3, 2009 at 9:16pm

  Fgravity=Fcentripetal GMearth/(radEarth+ 2600km)^2= mv^2/(radearth+2600) solve for v. change all distances to meters..

  
  

• physics - forces - Shane, Tuesday, November 3, 2009 at 9:21pm

  would m be the mass of the earth?

  
  

• physics - forces - bobpursley, Tuesday, November 3, 2009 at 9:27pm

  m is mass satellite. And I forgot one on the left of that line. Here is is corrected: GMearth*m/(radEarth+ 2600km)^2= mv^2/(radearth+2600)

  
  

• physics - forces - Anonymous, Tuesday, November 3, 2009 at 9:38pm

  does that mean the mass of the statellite cancels? because the mass of the statellite isnt given

  
  

• physics - forces - bobpursley, Tuesday, November 3, 2009 at 9:49pm

  yes, the mass of the satellite divides out.

  
  

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