Roboguru

Vektor gaya dan  terletak pada sebuah diagram kart...

Vektor gaya undefineddan F subscript 3 terletak pada sebuah diagram kartesius seperti gambar :

Resultan ketiga vektor adalah ....

  1. square root of 26 space straight N

  2. square root of 76 space straight N

  3. square root of 84 space straight N

  4. square root of 168 space straight N

  5. square root of 204 space straight N

Jawaban:

Tinjau sumbu x:

sum for blank of F subscript x equals F subscript 1 cos space 30 degree minus space F subscript 3 space end subscript sin space 60 degree  sum for blank of F subscript x equals left parenthesis 12 right parenthesis left parenthesis 1 half square root of 3 right parenthesis minus left parenthesis 8 right parenthesis left parenthesis 1 half square root of 3 right parenthesis  sum for blank of F subscript x equals 6 square root of 3 minus 4 square root of 3  sum for blank of F subscript x equals 2 square root of 3 N

Tinjau sumbu y:

sum for blank of F subscript y equals F subscript 1 cos space 30 degree minus space F subscript 3 space end subscript sin space 60 degree minus F subscript 2  sum for blank of F subscript y equals left parenthesis 12 right parenthesis left parenthesis 1 half right parenthesis minus left parenthesis 8 right parenthesis left parenthesis 1 half right parenthesis minus 10  sum for blank of F subscript y equals 6 minus 4 minus 10  sum for blank of F subscript y equals negative 8 N

Maka, besarnya resultan gaya dengan menggunakan vektor adalah :

straight F subscript straight R equals square root of left parenthesis sum for blank of straight F subscript straight x right parenthesis squared plus left parenthesis sum for blank of straight F subscript straight y right parenthesis squared end root  straight F subscript straight R equals square root of left parenthesis 2 square root of 3 right parenthesis squared plus left parenthesis negative 8 right parenthesis squared end root  straight F subscript straight R equals square root of 76 space straight N

 

0

Ruangguru

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ikuti Kami

©2021 Ruangguru. All Rights Reserved