- #1
LovePhys
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Homework Statement
Two Earth satellites are in parallel orbits with radii 6700 km and 6701 km. One day they pass each other, 1 km apart, along a line radially outward from the earth. How long will it be until they are again 1 km apart?
Homework Equations
s=r*θ
The Attempt at a Solution
I have an idea that when the two satellites are again 1km apart, they should have the same radian measure. Therefore, if [itex] s_{1}=r_{1}θ [/itex] and [itex] s_{2}=r_{2}θ [/itex], then [itex] \frac{s_{1}}{r_{1}}=\frac{s_{2}}{r_{2}} [/itex]. But this is just a proportion and I can't find a way to the time required.
At the moment, I have an idea of substituting a value for s2 and then find s1. Then I compare the time taken by each satellite to cover the required distance, if they two values of time do match, then it will be the final answer...