Power Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t4-167

Effect

Computation or source lookup only

Input and validation requirements

The specification exposes an undefined zero-time input and does not define behavior when both input representations are supplied or whether force-velocity power is signed or magnitude-only. The calculator should reject t=0 and require an explicit mode and sign convention.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "mode": "work_time",
    "W": 1200,
    "W_unit": "J",
    "t": 30,
    "t_unit": "s"
  },
  "expected_outputs": {
    "P_W": 40,
    "P_hp": 0.0536193029
  },
  "working": "P = W/t = 1200 J / 30 s = 40 J/s = 40 W.\\nP_hp = 40 W / 746 W per hp = 0.0536193029 hp."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche4/tranche4-results.json