How can we relate project management to the laws of physics?

Veronica, all Newton's Laws relate to project management. For example, Newton's first law of Inertia: "An object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force." The Project Management analogy to this is that projects tend to keep their current course unless a deliberate change is introduced. If a project is stuck (at rest), it will remain stalled without intervention. Conversely, once momentum builds, the project will keep progressing until a blocking issue or risk forces a slowdown. Change management acts as the "external force" that redirects project momentum.

Another one that I really like is the "Principle of Least Friction" where systems follow the path requiring the least energy expenditure. The project management analogy to this is that projects often naturally find the path of least resistance. Understanding this can help managers identify shortcuts or optimize workflows. However, sometimes the easiest path isn’t the best long-term solution and requires balancing short-term gains against long-term goals.

That’s a really creative way of looking at it, Verónica, I like the Newton’s 3rd law analogy with risk management.
A few others come to mind:
- Newton’s Second Law (F = m·a): The bigger the scope (mass), the more force (resources, leadership, sponsorship) is required to accelerate progress. If the force is weak, acceleration will be minimal, no matter how ambitious the plan is.
- Law of Thermodynamics (Entropy): in this one I related with the thought that without structure and discipline, projects naturally drift into chaos. Processes, governance, and communication are the “energy inputs” that keep order.
- Principle of Leverage: in this case, just as a lever multiplies force, good stakeholder management multiplies impact. Small, well-placed efforts (clear communication, early alignment) can produce outsized results.

I think using physics laws is a fun way to remind ourselves that projects are systems too, they need balance, energy, and structure to avoid breakdowns.

I wrote some papers in the matter, I present it in conferences including the PMI World Tour. One of them: https://www.projectmanagement.com/blog-pos...onal-change

I was proud because the amount of citations, feedback and translations to other languages. No matter I did not get money for that....jeje

Verónica Elizabeth Pozo Ruiz
Brilliant metaphor!
Drawing parallels between project management and the laws of physics offers a creative and intuitive way to surface hidden dynamics within projects.

Your example of Newton’s Third Law (“for every action, there is an equal and opposite reaction”) aligns beautifully with risk management, trade-offs, and unintended consequences — especially in complex systems where decisions are interdependent.

We can go further:

- First Law (Inertia): A project will remain in its current state (chaos or order) unless acted upon by an external force.
This resonates with change management.
Without intentional leadership, things won’t just “fix themselves.”

- Second Law (F = ma): Force equals mass times acceleration.
In projects, this could represent how resources (mass) and urgency (acceleration) together determine the impact (force).
Applying pressure without enough “mass” (capacity, skills) leads to burnout rather than progress.

Thermodynamics – Entropy: Projects naturally tend toward disorder over time.
Without constant energy input (communication, alignment, retrospectives), systems degrade.
Entropy reminds us why governance and cadence rituals are essential.

Heisenberg’s Uncertainty Principle (Quantum Mechanics): The more precisely we try to measure one aspect (e.g., time), the less precisely we can know another (e.g., scope).
It mirrors the PM Triangle — optimizing one constraint affects the others.

Ultimately, physics offers not just metaphors, but models for systemic thinking.
Just like the physical universe, projects operate under forces, resistances, and thresholds.

Would love to see a full article mapping these out!
Thanks for opening this thought-provoking thread.