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Suatu planet dengan massa  berada dari satelitnya ...

Suatu planet dengan massa begin mathsize 14px style 2 space cross times space 10 to the power of 9 space kg end style berada dari satelitnya yang mempunyai massa begin mathsize 14px style 8 space cross times space 10 to the power of 6 space kg end style. Gaya gravitasi antara planet tersebut dengan satelitnya adalah.....

begin mathsize 14px style open parentheses G space equals space 6 comma 67 space cross times space 10 to the power of negative 11 end exponent space Nm squared divided by kg squared close parentheses end style 

  1. begin mathsize 14px style 6 comma 7 space cross times space 10 to the power of 8 space straight N end style 

  2. begin mathsize 14px style 6 comma 7 space cross times space 10 to the power of 6 space straight N end style 

  3. begin mathsize 14px style 6 comma 7 space cross times space 10 to the power of negative 8 end exponent space straight N end style 

  4. begin mathsize 14px style 6 comma 7 space cross times space 10 to the power of negative 9 end exponent space straight N end style 

  5. begin mathsize 14px style 6 comma 7 space cross times space 10 to the power of negative 2 end exponent space straight N end style 

Jawaban:

Hukum Gravitasi Newton apabila dituliskan dalam suatu persamaan adalah sebagai berikut :

begin mathsize 14px style bold italic F bold space bold equals bold space bold italic G bold space fraction numerator bold italic m subscript bold 1 bold space bold italic m subscript bold 2 over denominator bold italic r to the power of bold 2 end fraction end style 

Kemudian gaya gravitasi antar planet 

 begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell F space end cell equals cell space G space fraction numerator m subscript 1 space m subscript 2 over denominator r squared end fraction end cell row cell F space end cell equals cell space 6 comma 67 cross times 10 to the power of negative 11 end exponent space Nm squared divided by kg squared space fraction numerator 2 cross times 10 to the power of 9 space kg space times space 8 cross times 10 to the power of 6 space kg over denominator open parentheses 4 cross times 10 to the power of 6 space straight m close parentheses squared end fraction end cell row cell bold italic F bold space end cell bold equals cell bold space bold 6 bold comma bold 7 bold space bold cross times bold space bold 10 to the power of bold minus bold 8 end exponent bold space bold N end cell end table end style 

Maka, didapatkan gaya gravitasi antara planet tersebut dengan satelitnya adalah begin mathsize 14px style bold 6 bold comma bold 7 bold space bold cross times bold space bold 10 to the power of bold minus bold 8 end exponent bold space bold N end style.

 

Jadi, jawaban yang tepat adalah C

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