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⚛️ Physics
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Parameters
Show: 0 = field strength, 1 = potential
Key Concepts
•
Outside
: g = GM/r² (inverse-square law) — maximum at the surface
•
Inside
uniform sphere: g increases linearly from centre to surface
• g = −dV/dr — field strength is the negative gradient of the potential
• Gravitational potential V is always negative (zero at infinity)
•
Escape velocity
: v_esc = √(2GM/R) — independent of projectile mass
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