Gravitational Potential Energy 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

t4-095

Effect

Computation or source lookup only

Input and validation requirements

The general formula has an undefined division-by-zero input at r=0 and must reject it rather than return a numeric result. A separate hazard is that general and near-surface outputs use different reference conventions, so switching modes can produce apparently inconsistent values unless the reference level is made explicit.

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": "general",
    "m1_kg": 5.972e+24,
    "m2_kg": 1000,
    "r_m": 7000000,
    "G_N_m2_per_kg2": 6.6743e-11
  },
  "expected_outputs": {
    "U_J": -56941313714.2857
  },
  "working": "U=−Gm1m2/r\n=−(6.67430×10^-11)(5.972×10^24)(1000)/(7.000×10^6)\n=−(6.67430×5.972)×10^16/(7.000×10^6)\n=−39.8589196×10^16/(7.000×10^6)\n=−5.69413137142857×10^10 J\n=−56,941,313,714.2857 J"
}

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