Science & Engineering

Normal Force Calculator (Flat, Incline, Elevator)

Find the normal force in four cases: a flat surface, an incline, an elevator with vertical acceleration, and an applied force at an angle. Each uses the matching physics formula.

How to use
  1. Pick the scenario: flat, incline, elevator, or angled force.
  2. Enter the mass and any angle or acceleration.
  3. Add the applied force if the case needs it.
For study and estimation. Verify against authoritative data before relying on a result.
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Common questions

What is the normal force?

It is the support force a surface pushes back on an object with, acting perpendicular to that surface.

Why does an incline reduce the normal force?

On a slope only the component of gravity perpendicular to the surface presses into it, which is mg times the cosine of the angle.

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