{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/calculator/friction-calculator/schema.json",
  "title": "Friction Calculator inputs",
  "description": "Calculate friction force from a coefficient of friction and normal force or mass.",
  "type": "object",
  "properties": {
    "normalSource": {
      "title": "Normal force input",
      "type": "string",
      "default": "mass",
      "enum": [
        "mass",
        "normal"
      ],
      "x-optionLabels": {
        "mass": "Use mass on a level surface",
        "normal": "Enter normal force directly"
      }
    },
    "coefficient": {
      "title": "Coefficient of friction μ",
      "type": "number",
      "default": 0.3,
      "minimum": 0,
      "x-step": 0.001
    },
    "mass": {
      "title": "Mass (kg)",
      "type": "number",
      "default": 20,
      "minimum": 0,
      "x-step": 0.001
    },
    "gravity": {
      "title": "Gravity (m/s²)",
      "type": "number",
      "default": 9.80665,
      "minimum": 0.000001,
      "x-step": 0.00001
    },
    "normalForce": {
      "title": "Normal force (N)",
      "type": "number",
      "default": 196.133,
      "minimum": 0,
      "x-step": 0.001
    }
  },
  "required": [
    "normalSource",
    "coefficient",
    "mass",
    "gravity",
    "normalForce"
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "1.0.0",
    "calculatorUrl": "https://askcalculators.com/calculator/friction-calculator/",
    "queryExample": "https://askcalculators.com/calculator/friction-calculator/?normalSource=mass&coefficient=0.3&mass=20&gravity=9.80665&normalForce=196.133",
    "migrationStatus": "new",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "formula": {
      "expression": "friction force f = μN; on a level surface N = mg"
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/friction-calculator.json",
      "qualifiedReview": "pending",
      "qualifiedReviewer": null,
      "qualifiedReviewDate": null,
      "formulaVersion": "1.0.0",
      "referenceCoverage": "references-pending",
      "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
      "historicalMetadataDate": "2026-09-01",
      "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
    },
    "outputs": {
      "frictionForce": {
        "title": "Friction force (N)",
        "type": "number",
        "x-format": "number",
        "x-digits": 8,
        "x-primary": true
      },
      "normalForceResult": {
        "title": "Normal force used (N)",
        "type": "number",
        "x-format": "number",
        "x-digits": 8
      }
    }
  }
}