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Find the maxima and minima of the magnitude

  • Thread starter imy786
  • Start date
  • #1
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Homework Statement



A hypothetical star S has a planet P that moves in an elliptical orbit with period T . The minimum distance of P from S is d and the maximum distance is 1.7d.
(i) find the maxima and minima of the magnitude of the acceleration of P, in terms of d and T .

Homework Equations



dont know

The Attempt at a Solution



can anyone give me the eqution for this
 

Answers and Replies

  • #2
SGT
Try Newton´s law of gravitation or Kepler´s laws.
 
  • #3
322
0
a= (2*pi)^2 * ( r^3 / T^2) * 1/ X^2

minimum distance is d
max distance is 1.7 d

do i substitue d for r?
 

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