- #1
c-murda
- 67
- 0
Homework Statement
a planet is 2.00 a.u. when it is closest to the sun. its eccentricity is .5000. Find its period in years.
Homework Equations
The Attempt at a Solution
i got this so far... don't know if it is right
PD + AD = A
-AD - PD = F <SUBTRACTING THESE TWO>
2PD = A - F
2PD = A - (EA)
2PD = A(1-E)
2PD/(1-E) = A
A = 2(2)/(1.-.5)
A= 8 a.u.
then for a
a= 8.00/2
a= 4.00 a.u.
T^2 = a^3
T = sqrt(a^3)
T = 8
im lost T = 8 what? years?