•>. Materi Vektor Satuan (10)
~> Proyeksi-kan vektor F terhadap sumbu x & y!
~> Dari trigonometri kita dapat menyelesaikan beberapa variabel F ini!
~> Smbu Y
6.sin 30° = 3 N ✓ {atas}
4.sin 60° = 2√3 N ✓ {atas}
8.sin 210° = 8. - sin 30°
= - 4 N ✓ {bawah}
4.sin 240° = 4. - sin 60°
= - 2√3 N ✓ {bawah}
4.sin 330° = 4. - sin 30°
= - 2 N ✓ {bawah}
~> Smbu X
6.cos 30° = 3√3 N ✓ {kanan}
4.cos 60° = 2 N ✓ {kanan}
8.cos 210° = 8. - cos 30°
= - 4√3 N ✓ {kiri}
4.cos 240° = 4. - cos 60°
= - 2 N ✓ {kiri}
4.cos 330° = 4.cos 30°
= 2√3 N ✓ {kanan}
~> R(X) = FX(+) - FX(-)
= 3√3 + 2√3 + 2 - 2 - 4√3
= √3. (kanan)
R(Y) = FY(+) - FY(-)
= 3 + 2√3 - 4 - 2√3 - 2
= - 3. (bawah)
R = √R(X)² + R(Y)²
= √3 + 9 ≈ 2√3 N ✓✓ {kearah kuadran 4!)
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•>. Materi Vektor Satuan (10)
~> Proyeksi-kan vektor F terhadap sumbu x & y!
~> Dari trigonometri kita dapat menyelesaikan beberapa variabel F ini!
~> Smbu Y
6.sin 30° = 3 N ✓ {atas}
4.sin 60° = 2√3 N ✓ {atas}
8.sin 210° = 8. - sin 30°
= - 4 N ✓ {bawah}
4.sin 240° = 4. - sin 60°
= - 2√3 N ✓ {bawah}
4.sin 330° = 4. - sin 30°
= - 2 N ✓ {bawah}
~> Smbu X
6.cos 30° = 3√3 N ✓ {kanan}
4.cos 60° = 2 N ✓ {kanan}
8.cos 210° = 8. - cos 30°
= - 4√3 N ✓ {kiri}
4.cos 240° = 4. - cos 60°
= - 2 N ✓ {kiri}
4.cos 330° = 4.cos 30°
= 2√3 N ✓ {kanan}
~> R(X) = FX(+) - FX(-)
= 3√3 + 2√3 + 2 - 2 - 4√3
= √3. (kanan)
R(Y) = FY(+) - FY(-)
= 3 + 2√3 - 4 - 2√3 - 2
= - 3. (bawah)
R = √R(X)² + R(Y)²
= √3 + 9 ≈ 2√3 N ✓✓ {kearah kuadran 4!)