Normal Force Calculator

Find the normal force on an object resting on a slope.

Mass

Surface angle (°)

Gravity (m/s²)

Normal force (N) 98.1

Formula: N = m·g·cosθ

Step-by-step with your numbers:

1. Values used:

2. Mass = 10

3. Surface angle = 0 °

4. Gravity = 9.81 m/s²

6. Normal force = 98.1N

Did we solve your problem today?

The normal force is the support force a surface pushes back with, perpendicular to it.

The math behind it

On a slope, N = m·g·cosθ. On flat ground (θ = 0) it equals the full weight m·g.

10 kg on a 0° surface → 98.1 N.

Why does it shrink on a slope?

Part of gravity acts along the slope, so less presses into the surface.