PHYIC CALCULATOR
Escape Velocity Calculator
A precise tool.
What is the Escape Velocity Calculator & How does it work?
The escape velocity is the minimum speed needed for an object to escape from the gravitational influence of a massive body, such as a planet. This concept is crucial in astrophysics and space exploration.
v = sqrt{frac{2GM}{r}}
v = escape velocity, G = gravitational constant, M = mass of the planet, r = radius from the center of the planet to the point of escape.
The formula shows that the escape velocity depends on the mass of the planet and the distance from the center of the planet. The gravitational constant G is approximately 6.67430 times 10^{-11} , text{m}^3 , text{kg}^{-1} , text{s}^{-2}.
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Frequently Asked Questions
What is escape velocity?
Escape velocity is the minimum speed required for an object to escape the gravitational influence of a celestial body, like a planet.
How do I calculate escape velocity?
Use the formula v = sqrt(2GM/r), where G is the gravitational constant, M is the mass of the planet, and r is the distance from the center of the planet to the point of escape.
Does escape velocity depend on altitude?
Yes, escape velocity depends on the distance from the center of the planet (altitude), as well as the planet’s mass.
What is the escape velocity for Earth?
The escape velocity for Earth is approximately 11.2 km/s or about 40,270 km/h.
How does escape velocity change with mass?
Escape velocity increases with the mass of the planet; a more massive planet requires higher speed to escape its gravity.
Can I use this calculator for other celestial bodies?
Yes, you can use this formula and calculator for any celestial body by inputting its specific mass and radius.
What units should I use for the calculations?
Use meters (m) for distance, kilograms (kg) for mass, and seconds (s) for time to get the escape velocity in meters per second (m/s).
Results are for informational purposes only and do not constitute professional advice.