mechanical.statics.slip_or_tip

Three distinct suites: educational examples on the calculator page, this legacy regression count (7/7 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

This calculator CURRENT · Public schema 1.0.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-09-27.o2-o3. Calculation version 1.0.0. CVP 1.0.0-proposed. 4/4 golden · 4/4 CVP boundary · 6/6 invalid · 1/1 property · 1/1 metamorphic · 8/8 O3 · 2/2 cross-interface · 6/6 CVP contract. digest fcf2cdd2fb94. O2: P vs a separate-module identity (≤2 ULP). Not an incline, not wedges, not screws, and not belts. ≤2 ULP vs O3 applies only to the published tabulated slip-or-tip vectors.

• Golden (oracle-backed) 4 / 4
• CVP boundary 4 / 4
• Invalid input 6 / 6
• Property 1 / 1
• Metamorphic 1 / 1
• O3 high-precision 8 / 8
• Cross-interface 2 / 2
• CVP contract 6 / 6
• Interfaces PASS · UI (SSR) / REST / MCP
• Interface claim ui-ssr is query-result HTML, not a live browser session. Error-path engine·REST·MCP 1/1 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only.
• Verified scope Level surface: P_slip = μW and P_tip = W b/(2 d); P is the smaller. + O3 mpmath tabulated P.
• Assurance Engineering
• Deferred Not an incline, not wedges, not screws, and not belts.

• 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:dc42fbe4b796b5ff53f2a28767251849b8f1db6c2b324139a1f2f0f775075e51

Input schema sha256:3f06e14f0ea2ed86e3868e51a88039f2ca32bf4fa75e61e11d96c88cad993e5e · Output schema sha256:4154efade7cc81b1596a2ac33880a0326cd0e241674e0474bc48b172b0f1f4d4 · 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.

Tool

slip-or-tip

Engine

slip-or-tip

Engine build

2026-09-27

Evidence core

2026-09-27T08:15:46.336Z

Rendered

2026-11-10T05:18:42.164Z

Last reviewed

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Limitations

• The surface is level and the force is horizontal
• The weight acts through the center of a base of width b
• mode is slip, tip, or either
• Not an incline, a wedge, a screw, or a belt