Saturday

August 23, 2014

August 23, 2014

Posted by **Harry** on Friday, December 29, 2006 at 1:49pm.

Using Kepler's Law you find that the anser is 97^(1.5) years. You can estimate this without using a calculator:

97^(1.5) = (100-3)^(1.5) =

[100*(1 - 3/100)]^(1.5) =

100^(1.5)*(1-3/100)^(1.5)=

1000*[1-1.5*3/100 + (1.5)*(0.5)/2 (3/100)^2 + term of order (3/100)^3] =

1000 - 45 + 27/80 + term of order 1/100

27/80 is about 1/3, so the answer is

955.3 years.

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