Circular orbit

  • Thread starter Weave
  • Start date
  • #1
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Homework Statement


What is the acceleration due to gravity of the sun at the distance of the earth's orbit?



Homework Equations


Confused on which one to use



The Attempt at a Solution

 

Answers and Replies

  • #2
andrevdh
Homework Helper
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The sun attract a body according to Newton's universal gravitational law (falling apple), [tex]F_G[/tex]. The acceleration of a body due to this force will then be

[tex]a = \frac{F_G}{m}[/tex]

where m is the mass of the body. Will this acceleration be the same for all bodies at the same position w.r.t. the sun? Why?
 
  • #3
tony873004
Science Advisor
Gold Member
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You can also use a=GM/r^2 where G is the Gravitational constant, M is the mass of the Sun (in kg if you use 6.67e-11 for G) and r is the Earth Sun distance in meters (again, if you use 6.67e-11 for G).
 

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