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Verified answer
Data:Q1 = 4 μC = 4 × 10⁻⁶ C
Q2 = 4 μ C = 4 × 10⁻⁶ C
F1 = 360 N
F2 = 90 N
r1 = ... m
r2 = ... m
Ditanya:
Agar diperoleh gaya sebesar 90 N, maka muatan Q2 harus digeser sejauh ...
Penyelesaian:
1) Cari r1 nya,
F₁ = k Q1 Q2 / r₁²
360 = (9 × 10⁹)(4 × 10⁻⁶)(4 × 10⁻⁶)/ r₁²
360 = 9 × 4 × 4 × 10⁽⁹⁻⁶⁻⁶⁾/r₁²
r₁² = 9 × 4 × 4 × 10⁽⁹⁻⁶⁻⁶⁾/360
r₁² = 144 ×10⁻³ / 360
r₁² = 144 × 10⁻²/ 3600 (Diubah supaya bisa di pangkatkan)
r₁ = √(144 × 10⁻²/ 3600)
r₁ = 12 x 10⁻¹/ 60
r₁ = 1,2 / 60
r₁ = 0,02 m = 2 cm
F₂ = k Q1 Q2/r₂
90 = 144 × 10⁻³/ r₂²
r₂² = 144 × 10⁻³/ 90
r₂² = 144 × 10⁻²/ 900
r₂ = √(144 × 10⁻²/ 900)
r₂ = 12 x 10⁻¹/ 30
r₂ = 1,2 / 30
r₂ = 0,04 m = 4 cm
Muatan Q2 harus di geser sejauh:
= r₂ - r₁
= 4 - 2
= 2 cm
CMIIW :3