D0EL represents the correct problem-solving strategy for energy conservation problems. D0EL is the cousin of DID TASC.

The steps of   D0EL:

1. Define/draw system: Include both objects and coordinates.
2. 0 Choose consistent zero of the potential energy.
3. Energy conservation statement:
   
   E_f = E_i
        K_f + U_f = K_i + U_i
   U_i - U_f = K_f - K_i
   - Δ U = Δ K
4. Losses: Incorporate if needed.
   
   E_f = E_i - losses