Roboguru

Dua benda bermassa 4 kg dan 6 kg terpisah sejauh 20 cm. besar gaya gravitasi antara kedua benda tersebut adalah ...

Dua benda bermassa 4 kg dan 6 kg terpisah sejauh 20 cm. besar gaya gravitasi antara kedua benda tersebut adalah ...space 

  1. begin mathsize 14px style 5 comma 121 cross times 10 to the power of negative 8 end exponent space text N end text end style 

  2. begin mathsize 14px style 3 comma 587 cross times 10 to the power of negative 8 end exponent space text N end text end style 

  3. begin mathsize 14px style 4 comma 002 cross times 10 to the power of negative 8 end exponent space text N end text end style 

  4. begin mathsize 14px style 7 comma 412 cross times 10 to the power of negative 8 end exponent space text N end text end style 

  5. begin mathsize 14px style 12 comma 110 cross times 10 to the power of negative 8 end exponent space text N end text end style 

Jawaban:

Diketahui

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell m subscript 1 end cell equals cell 4 space text kg end text end cell row cell m subscript 2 end cell equals cell 6 space text kg end text end cell row r equals cell 20 space text cm end text equals 2 cross times 10 to the power of negative 1 end exponent space text m end text end cell end table end style 

Dengan menggunakan Hukum Gravitasi Newton, maka besar gaya gravitasinya adalah:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row F equals cell fraction numerator G m subscript 1 m subscript 2 over denominator r squared end fraction end cell row blank equals cell fraction numerator open parentheses 6 comma 67 cross times 10 to the power of negative 11 end exponent close parentheses 4 times 6 over denominator open parentheses 2 cross times 10 to the power of negative 1 end exponent close parentheses squared end fraction end cell row blank equals cell fraction numerator open parentheses 6 comma 67 cross times 10 to the power of negative 11 end exponent close parentheses 4 times 6 over denominator 4 cross times 10 to the power of negative 2 end exponent end fraction end cell row blank equals cell 6 comma 67 cross times 10 to the power of negative 9 end exponent times 6 end cell row blank equals cell 40 comma 02 cross times 10 to the power of negative 9 end exponent end cell row blank equals cell 4 comma 002 cross times 10 to the power of negative 8 end exponent space text N end text end cell end table end style 

Jadi, jawaban yang tepat adalah C.

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