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Pertanyaan

Perhatikan gambar! Resultan ketiga vektor gaya tersebut adalah....

  1. 10 N

  2. 8 N

  3. 6 N

  4. 5 N

  5. 4 N

E. Dwihermiati

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Indonesia

Jawaban terverifikasi

Pembahasan

Tinjau sumbu x.

stack size 12px sum size 12px F subscript size 12px x size 12px equals size 12px F subscript size 12px 2 size 12px space size 12px cos size 12px 30 size 12px degree size 12px plus size 12px F subscript size 12px 1 size 12px minus size 12px F subscript size 12px 3 size 12px space with blank below  begin mathsize 12px inline style stack sum F subscript x equals open parentheses 10 close parentheses open parentheses begin display style 1 half square root of 3 end style close parentheses plus 8 minus 8 space with blank below end style  begin mathsize 12px inline style stack sum F subscript x equals open parentheses 5 square root of 3 close parentheses space N space with blank below end style

Tinjau sumbu y.

stack size 12px sum size 12px F subscript y size 12px equals size 12px F subscript size 12px 2 size 12px space size 12px sin size 12px 30 size 12px degree with blank below  begin mathsize 12px inline style stack sum F subscript y equals open parentheses 10 close parentheses open parentheses begin display style 1 half end style close parentheses with blank below end style  begin mathsize 12px inline style stack sum F subscript y equals 5 space N space with blank below end style

Maka, besarnya resultan gaya dengan mneggunakan vektor adalah:

begin mathsize 12px style F subscript R equals square root of open parentheses begin inline style stack sum F subscript X with blank below end style close parentheses squared plus open parentheses begin inline style stack sum F subscript y with blank below end style close parentheses squared end root  F subscript R equals square root of open parentheses begin inline style 5 square root of 3 end style close parentheses squared plus open parentheses begin inline style 5 end style close parentheses squared end root  F subscript R equals square root of 100  F subscript R equals 10 space N end style

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Pertanyaan serupa

Perhatikan gambar vektor berikut!    Tentukan resultan dari dua vektor tersebut!

741

5.0

Jawaban terverifikasi

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