{
  "id": "friction-calculator",
  "version": "1.0.0",
  "name": "Friction Calculator",
  "shortName": "Friction",
  "description": "Calculate friction force from a coefficient of friction and normal force or mass.",
  "category": "Science & Engineering",
  "categorySlug": "science-engineering",
  "keywords": [
    "friction",
    "calculator",
    "friction calculator"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "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."
  },
  "urls": {
    "page": "/calculator/friction-calculator/",
    "definition": "/calculator/friction-calculator/definition.json",
    "schema": "/calculator/friction-calculator/schema.json",
    "llms": "/calculator/friction-calculator/llms.txt",
    "legacyDefinition": "/calculator/friction-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/friction-calculator/?normalSource=mass&coefficient=0.3&mass=20&gravity=9.80665&normalForce=196.133",
  "queryParameters": {
    "normalSource": {
      "label": "Normal force input",
      "type": "select",
      "required": true,
      "default": "mass"
    },
    "coefficient": {
      "label": "Coefficient of friction μ",
      "type": "number",
      "required": true,
      "default": 0.3
    },
    "mass": {
      "label": "Mass (kg)",
      "type": "number",
      "required": true,
      "default": 20
    },
    "gravity": {
      "label": "Gravity (m/s²)",
      "type": "number",
      "required": true,
      "default": 9.80665
    },
    "normalForce": {
      "label": "Normal force (N)",
      "type": "number",
      "required": true,
      "default": 196.133
    }
  },
  "inputs": [
    {
      "id": "normalSource",
      "label": "Normal force input",
      "type": "select",
      "required": true,
      "defaultValue": "mass",
      "options": [
        {
          "label": "Use mass on a level surface",
          "value": "mass"
        },
        {
          "label": "Enter normal force directly",
          "value": "normal"
        }
      ]
    },
    {
      "id": "coefficient",
      "label": "Coefficient of friction μ",
      "type": "number",
      "required": true,
      "defaultValue": 0.3,
      "min": 0,
      "step": 0.001
    },
    {
      "id": "mass",
      "label": "Mass (kg)",
      "type": "number",
      "required": true,
      "defaultValue": 20,
      "min": 0,
      "step": 0.001
    },
    {
      "id": "gravity",
      "label": "Gravity (m/s²)",
      "type": "number",
      "required": true,
      "defaultValue": 9.80665,
      "min": 0.000001,
      "step": 0.00001
    },
    {
      "id": "normalForce",
      "label": "Normal force (N)",
      "type": "number",
      "required": true,
      "defaultValue": 196.133,
      "min": 0,
      "step": 0.001
    }
  ],
  "outputs": [
    {
      "id": "frictionForce",
      "label": "Friction force (N)",
      "format": "number",
      "primary": true,
      "digits": 8
    },
    {
      "id": "normalForceResult",
      "label": "Normal force used (N)",
      "format": "number",
      "digits": 8
    }
  ],
  "formula": {
    "expression": "friction force f = μN; on a level surface N = mg"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "normalSource": "mass",
        "coefficient": 0.3,
        "mass": 20,
        "gravity": 9.80665,
        "normalForce": 196.133
      }
    }
  ],
  "sources": []
}