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g at surface
g = GM/R²
Where: G = gravitational constant (N·m²/kg²), M = mass (kg), R = range / radius / resistance, g = acceleration due to gravity (m/s²)
Solved example
Given: G = 7, M = 5, R = 10
Find: g (acceleration due to gravity (m/s²))
- Formula: g = G·M/R²
- Substitute the values: g = 5·7/10²
- Result: g = 0.35 m/s²
Answer: g = 0.35 m/s²
Calculator
How to calculate g at surface
- Write down the formula: g = GM/R².
- Note the known values (G, M, R).
- Substitute them and simplify to find g.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for g at surface?
The formula is g = GM/R², where G = gravitational constant (N·m²/kg²), M = mass (kg), R = range / radius / resistance, g = acceleration due to gravity (m/s²).
What is g at surface when G = 7, M = 5, R = 10?
g = 0.35 m/s². Substitute the values into g = GM/R² and simplify.