PHY.4:8 - Common Anti-Patterns and How to Avoid Them

Dropping the surroundings from the transformation. Rotating a body relative to a fixed material direction can change its response. Transform the complete relevant account and distinguish that experiment from a coordinate change.

Selecting a magnitude law from direction symmetry. The linear and quadratic resistance possibilities in :5.1 satisfy the same directional restriction. Carry the unknown scalar function until a further physical contribution constrains it.

Applying an instantaneous dissipation inequality to an energy-storing interaction. Recover stored energy and the exchange balance. Temporary return of stored energy changes the instantaneous power without establishing an active energy source.

Using a balance with an omitted participant. Accumulation in the passage changes the two-chamber balance in :5.3. Include the storage and its exchanges before computing the chamber changes.