dua planet p dan q mengorbit matahari

Diket:

begin mathsize 14px style R subscript P space colon space R subscript Q equals 4 space colon space 9 T subscript P equals 24 space hari T subscript Q equals... ? end style

Gunakan Hukum III Keppler

begin mathsize 14px style T squared over R cubed equals K o n s tan T squared tilde R cubed  T subscript Q squared over T subscript P squared equals R subscript Q cubed over R subscript P cubed T subscript Q squared over 24 squared equals 9 cubed over 4 cubed T subscript Q squared over 24 squared equals 729 over 64 T subscript Q over 24 equals square root of 729 over 64 end root T subscript Q over 24 equals 27 over 8 T subscript Q equals 81 space hari end style 

Jadi, periode planet selama 81 hari.undefined 

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