Inclined Plane & Friction Calculator

Normal force, sliding force, friction and acceleration of a block on a slope.

Results

Normal force—
Force down the slope—
Maximum friction—
Acceleration down the slope—
Critical (sliding) angle—
State—

How to use the Inclined Plane & Friction Calculator

  1. Enter or select: Mass m, Slope angle θ, Friction coefficient μ, Gravity g.
  2. The results (Normal force, Force down the slope, Maximum friction, Acceleration down the slope, Critical (sliding) angle, State) are calculated instantly as you type.
  3. Use “Copy link” to share the calculation with the same input values.

Formula

  • N = mg cosθ
  • F∥ = mg sinθ
  • a = g(sinθ − μ cosθ)
  • θ_crit = arctan μ
ExpressionApply operationsCalculated result