Physics equation??? Watch
I'm going through a physics past paper and in the mark scheme it says I need to use "a=(4(pi^2)r)/(T^2)" to substitute into another equation. I don't remember coming across this equation. What is it saying and do I need to derive it from another equaiton or just straight learn it?
And then given you get
But you arent even expected to know keplers third law, you just need to be able to derive it from
but the first way is more fun :P