Function plasmoid_force_n 

pub fn plasmoid_force_n(pressure_pa: f64, cross_section_m2: f64) -> f64

Force on spacecraft from combined magnetic and ram pressure.

F = (P_mag + P_ram) × A_cross

Uses the effective cross-section exposed to the plasmoid flow. For a magnetically shielded ship, the effective area is the magnetosphere standoff cross-section, not the physical hull.

Arguments

• pressure_pa - Total dynamic + magnetic pressure (Pa)
• cross_section_m2 - Effective cross-sectional area (m²)