Escape Velocity
This interactive simulator explores Escape Velocity in Gravity & Orbits. Launch from different planets and see trajectory results. Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.
Who it's for: Suited to beginners and first exposure to the topic. Typical context: Gravity & Orbits.
Key terms
- escape
- velocity
- escape velocity
- gravity
- orbits
How it works
From distance r from the center of a spherical body, the escape speed is v_esc = √(2GM/r). Launch radially outward: below v_esc the probe stays bound (ellipse); at or above v_esc the specific mechanical energy is non-negative and the trajectory can reach infinity. Circular orbit speed √(GM/r) is smaller by √2 — compare the readouts. Planet presets scale GM and radius for a qualitative feel, not astronomical accuracy.
Key equations
More from Gravity & Orbits
Other simulators in this category — or see all 14.
Gravitational Lensing
Massive objects bending light. Visual distortion effects.
Lagrange Points L1–L5
CRTBP effective potential; L1–L5; Coriolis test particle.
Earth–Moon Tides
Equilibrium tide bulges; orbit speed; ~12.4 h spacing note.
Binary Star (circular)
COM orbits; r₁,r₂; Kepler T² ∝ a³/(M₁+M₂).
Roche Limit
Fluid d ≈ 2.456 R_p (ρ_p/ρ_s)^(1/3); vs orbit distance.
Space Elevator Tether
1D tension vs height; peak near GEO (normalized model).