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Benda bermassa  dihubungkan dengan tali melalui ka...

Benda bermassa begin mathsize 14px style straight M subscript 1 space dan space straight M subscript 2 end style dihubungkan dengan tali melalui katrol licin seperti gambar.

Jika massa begin mathsize 14px style M subscript italic 1 equals 1 space kg comma space M subscript italic 2 equals space 2 space kg comma space dan space g equals 10 straight m over straight s squared end style, maka percepatan sistem sebesar....

  1. begin mathsize 14px style 2 comma 2 space straight m over straight s squared end style  

  2. begin mathsize 14px style 3 comma 3 space straight m over straight s squared end style 

  3. begin mathsize 14px style 5 comma 5 space straight m over straight s squared end style 

  4. begin mathsize 14px style 8 comma 3 space straight m over straight s squared end style 

  5. begin mathsize 14px style 10 space straight m over straight s squared 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 1 blank kg end cell row cell M subscript 2 end cell equals cell 2 blank kg end cell row g equals cell 10 straight m over straight s squared end cell row blank blank blank end table end style 

Ditanya:
begin mathsize 14px style a equals blank ? end style 

Jawab

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell capital sigma F end cell equals cell m subscript t o t a l end subscript cross times a end cell row cell W subscript 2 minus T subscript 1 plus T subscript 1 minus W subscript 1 end cell equals cell left parenthesis M subscript 1 plus M subscript 2 right parenthesis cross times a end cell row cell open parentheses M subscript 2 cross times g close parentheses minus left parenthesis M subscript 1 cross times g right parenthesis end cell equals cell left parenthesis M subscript 1 plus M subscript 2 right parenthesis cross times a end cell row cell 20 minus 10 end cell equals cell left parenthesis 1 plus 2 right parenthesis cross times a end cell row 10 equals cell 3 a end cell row a equals cell 10 over 3 equals 3 , 3 straight m over straight s squared end cell end table end style 

Jadi, jawaban yang benar adalah B

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