Lesson 102 of 1455
Physics With AI: Simulations, Vectors, and Free Body Diagrams
Physics needs intuition. PhET simulations plus AI explanations give you that intuition faster than any textbook.
Builders · AI Foundations · ~18 min read
Physics is feeling the forces
Physics problems are word problems pretending to be math problems. The hard part is not the algebra; it is figuring out what is happening. A ball rolling down a ramp. A car accelerating. A rope swinging. You have to SEE it before you can solve it.
The tools stack
- PhET Simulations (phet.colorado.edu): free, play with gravity, circuits, waves
- ChatGPT or Claude: draws free-body diagrams using text, explains setups
- Wolfram Alpha: computes anything once you have the equations
- Photomath: handles many physics word problems
- Algodoo: sandbox physics simulator, great for intuition
Free body diagrams, AI-assisted
A free body diagram shows all forces on an object: gravity down, normal force up, friction back, applied force forward. Drawing these is a skill. AI can describe them for you, but YOU should draw them to build intuition.
Ask for the setup, not the solution.
Good physics prompt: 'A 5 kg box sits on a 30-degree incline. There is friction with coefficient 0.2. Walk me through the free body diagram. Label each force. Do NOT solve the problem yet. I want to draw it myself from your description.'PhET: the secret weapon
PhET is free physics simulations from the University of Colorado. You drag sliders and see what happens. Pair it with AI: read the topic, play with the sim, ask AI questions about what you saw. This builds real intuition in minutes.
Compare the options
| Textbook-only study | PhET + AI |
|---|---|
| Read about projectile motion | Actually launch a cannon at different angles |
| See one diagram | See 1000 trajectories |
| Ask teacher next class | Ask AI the exact question right now |
| Memorize formula | See when formula breaks (air resistance) |
Where AI struggles with physics
- Anything that requires a diagram ChatGPT cannot see
- Problems with unusual setups (ramps with springs, etc.)
- Getting signs right (positive vs negative directions)
- Quantum and relativity problems - often hallucinates
The honest learning path
- 1Read the problem. Draw a picture
- 2Draw the free body diagram yourself
- 3Pick your axes and direction (+x, -y, whatever)
- 4Write equations of motion
- 5Now and only now, use Wolfram to solve the algebra
- 6Check: does the answer make physical sense?
- 7Redo the tricky part on paper to lock it in
“If you can't explain it simply, you don't understand it well enough.”
Key terms in this lesson
The big idea: physics is intuition first, math second. Use PhET and AI to build the intuition. Save the heavy math for when you already see the setup.
End-of-lesson quiz
Check what stuck
8 questions · Score saves to your progress.
Lesson help
Questions are best handled with a grown-up here.
For this age range, Tendril keeps freeform AI chat paused until parent/guardian consent and child-safe moderation are fully verified. Use the quiz, notes, and related lessons below, or ask a parent, guardian, teacher, or librarian to work through the question with you.
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