Free-Body Diagram Builder
Build FBDs for flat, push, inclined, and hanging scenarios — see all forces labelled.
Key Notes
A Free-Body Diagram shows all external forces on a single object, represented by arrows from the object.
Standard forces: weight (mg, down), normal (N, ⊥ to surface), friction (f, parallel to surface opposing motion), tension (T, along string), applied force.
Choose coordinate axes to simplify — align with incline for ramp problems.
Then apply ΣF = ma along each axis independently.
Formulas
FBD method
Newton's 2nd law per axis.
Important Points
On an incline, resolve gravity as mg sinθ (along) + mg cosθ (perpendicular). N = mg cosθ.
Free-Body Diagram Builder notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.