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Public evidence

mechanical.statics.planar_equilibrium

Machine-checked verification for calculation version 1.0.0 · tier engine_tested

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Verification

6/6 calculation tests · Production surface contract 6/6

  • Golden tests 2 / 2
  • Boundary tests 4 / 4
  • Property tests 0 / 0
  • Production surface contract 6 / 6
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  • Engine tested Yes
  • Source checked Yes
  • Artifact integrity PASS
  • Production attestation Embedded snapshot: unpublished · Build schema 1.0.0 ready · Semantic contract ✓ · Attestation report not published on origin · Live production status STALE (3 capabilities; 189 remain CURRENT) @ 2026-09-23T10:40:38.140Z
  • Semantic contract PASS
  • Evidence attested at 2026-09-23T02:27:54.588Z
  • Last production check 2026-09-23T02:27:54.588Z
  • Public / cache —
  • Origin —
  • Supplemental domain review Not performed
  • Named expert review Not performed
  • release artifacts aligned PASS
  • schema output required declared PASS
  • schema valid input executes PASS
  • engine success output validates schema PASS
  • schema rejects incomplete input PASS
  • rest success payload validates schema PASS

Fingerprint sha256:d0264a345a6a0ef94c239f59a9481be4349685c86578c9fb0bb90b7f0c17878a

Input schema sha256:41d2fa8229214b25c71e2bb5ff68b7d8e72ccf50a520d034be955ec241c3b67e · Output schema sha256:771c270f4d80d40a536ac26f6779701ef3e836ffa1cc2137a8dd3fa9fabc5b0d · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Build & scope

Engine identity and declared limitations.

Tool
planar-equilibrium
Engine
planar-equilibrium
Engine build
2026-09-23
Evidence core
2026-09-23T06:12:30.048Z
Rendered
2026-09-23T10:57:00.181Z
Last reviewed
—

Limitations

  • 2-D point forces and concentrated moments only
  • Moment about the origin, CCW positive
  • Solve path is exactly 2 or 3 unknowns
  • Not beam deflection, distributed load, frames, or 3-D

Sources

Standards and references supporting this tool specification. Methods are listed separately — they are algorithms, not bibliographic sources.

Published checks

Golden, boundary, and property cases included in this evidence build.

IDKindStatusDetail
golden-resultant-345goldenpassExpected resultant_n=5 · sum_fx=3 · sum_fy=4 · sum_m=0 · model=planar_equilibrium · Actual mode=resultant · model=planar_equilibrium · sum_fx=3 · sum_fy=4 · sum_m=0 · resultant_n=5 · angle_deg=53.13010235415598 · convention=CCW positive; M = x Fy − y Fx about the origin
boundary-momentboundarypassExpected sum_m=-20 · Actual mode=resultant · model=planar_equilibrium · sum_fx=0 · sum_fy=-10 · sum_m=-20 · resultant_n=10 · angle_deg=-90 · convention=CCW positive; M = x Fy − y Fx about the origin
golden-equilibriumgoldenpassExpected balanced=true · solver=math.linear_algebra solve order 3 · Actual mode=equilibrium · model=planar_equilibrium · sum_fx=0 · sum_fy=-100 · sum_m=-200 · resultant_n=100 · angle_deg=-90 · convention=CCW positive; M = x Fy − y Fx about the origin
boundary-emptyboundarypassExpected MISSING_REQUIRED_INPUT · Actual MISSING_REQUIRED_INPUT
boundary-modeboundarypassExpected INVALID_MODE · Actual INVALID_MODE
boundary-inconsistentboundarypassExpected INVALID_INPUT · Actual INVALID_INPUT