Normal Force on a Slope Calculator
🧱 Forces & Newton’s laws. Use the Normal force on a slope formula to find normal force, mass, slope angle θ, g: pick the value you want, type the others, and the answer updates as you go.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Normal force | N |
| Mass | kg |
| Slope angle θ | ° |
| g | N/kg |
Worked example
Find the normal force when Mass = 10 kg, Slope angle θ = 35 °, g = 9.81 N/kg.
Using N = mgcosθ: Normal force = 80.359 N.
Frequently asked questions
What is the formula for Normal force on a slope?
N = mgcosθ.
What do the letters stand for, and what units are used?
Normal force in N, Mass in kg, Slope angle θ in °, g in N/kg.
How do you calculate normal force?
Put the values into N = mgcosθ. For example, with Mass = 10 kg, Slope angle θ = 35 °, g = 9.81 N/kg, normal force = 80.359 N.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (normal force, mass, slope angle θ, g) and fill in the others: it rearranges the formula for you.
