ClarityHow to use this tool
- Enter central mass, orbital radius.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Central mass | Numeric value. Unit: kg. Must be greater than zero. | 5.972e+24 |
| Orbital radius | Numeric value. Unit: m. Must be greater than zero. | 7000000 |
Result for these sample inputs
7545.94684 m/s
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Circular speed = √(GM/r); G = 6.67430 × 10⁻¹¹.
Using central mass = 5.972e+24 kg, orbital radius = 7000000 m, the result is 7545.94684 m/s. Change these example inputs to match your task; use the method above to check each step.
What to keep in mind
An idealized educational model using the stated SI units. Real systems may need additional forces, losses or experimental measurements. Not a safety or equipment specification.
Methodology maintained by ClarityKit. How these tools are built and checked.