Abstract:
Simple operations transform Hamilton's equations for particle motion in classical mechanics into energy units. Then one obtains a single equation in location, location-changes, momenta and momenta-changes with the interpretation: income from capital, in units of energy, balances with current investment expenditure on location changes and momenta changes, also in units of energy. For the special case of periodic motion, the inflow-useflow sub-accounts for distinct position variables and for distinct momenta variables balance over the period of motion