Normal force
Flat surface N = mg; incline N = mg cos θ.
Calculator
How to use
Normal
g from tool config (default 9.81 m/s²)
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
Flat surface N = mg; incline N = mg cos θ.
g from tool config (default 9.81 m/s²)
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
Model / formula
Flat: N = mg. Incline: N = mg cos θ
Result
98.1000 N (θ=0 → flat; else incline from horizontal)