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Drag force opposes motion through a fluid. It depends on velocity, fluid properties, object shape, and reference area, crucial for vehicle and projectile design.
सूत्र
The calculator applies F_drag = ½ × C_d × ρ × A × v²
- A
- A value — Variable used in the calculation
चरण-दर-चरण मार्गदर्शिका
- 1Enter drag coefficient, reference area, fluid density, and velocity
- 2The calculator applies F_drag = ½ × C_d × ρ × A × v²
- 3Results show drag force in newtons
हल किए गए उदाहरण
इनपुट
C_d = 0.25 (car), A = 2.2 m², ρ = 1.225 kg/m³, v = 30 m/s
परिणाम
F_drag ≈ 609 N
Significant at highway speeds
सामान्य गलतियां जिनसे बचना है
- ✕Using area inconsistently (frontal vs. planform)
- ✕Applying drag formula outside its valid Reynolds number range
अक्सर पूछे जाने वाले प्रश्न
Why does drag increase with v²?
At higher speeds, impact with more fluid molecules dominates over viscous effects, creating quadratic velocity dependence.
How does shape affect drag?
Streamlined shapes have low drag coefficients; bluff objects like cubes have high coefficients, which is why cars are aerodynamic.
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