Fluid MechanicsIntermediate
Bernoulli's Equation
Energy conservation in fluid flow systems
Formula
8 minOpen
Engineering Formulas
Browse practical engineering formulas for mechanics, fluids, electrical circuits, materials, controls, and core physics topics.
Covered topics
Mechanics and motion
Fluid flow and pressure
Electrical circuits
Materials and design checks
How to use this page
- Start by confirming the assumptions before substituting values.
- Check units early, especially when moving between SI and course-specific notation.
- Use the worked examples to compare setup steps, not just final answers.
Common references
Start with these formulas
13 formulas in this collection
Bernoulli's EquationEnergy conservation in fluid flow systemsOpenOhm's LawRelationship between voltage, current, and resistanceOpenMoment of InertiaThe resistance of an object to rotational motion about an axis.OpenEquilibrium of ForcesThe condition where the net force acting on an object is zero, resulting in no acceleration.Open
Concepts and graphs
Some topics need explanation, not just a formula
ConceptMechanics
Free-Body Diagrams
A free-body diagram isolates one body or system and shows only the external forces and moments acting on it. It turns a physical situation into equations, making it the bridge between the problem statement and equilibrium or motion analysis.
Open conceptConceptMechanical Engineering
Shear Force and Bending Moment Diagrams
Shear force and bending moment diagrams show how internal forces vary along a beam. They help students find where loads create the largest internal shear, where bending is critical, and where stress or deflection calculations should focus.
Open conceptConceptMaterials Science
Stress-Strain Curve
A stress-strain curve shows how a material responds as tensile load increases. It helps students compare stiffness, yield behavior, ductility, strain hardening, necking, and fracture across metals, ceramics, polymers, and rubber-like materials.
Open conceptElectrical EngineeringBeginner
Ohm's Law
Relationship between voltage, current, and resistance
Formula
4 minOpen
PhysicsIntermediate
Moment of Inertia
The resistance of an object to rotational motion about an axis.
Formula
7 minOpen
PhysicsBeginner
Equilibrium of Forces
The condition where the net force acting on an object is zero, resulting in no acceleration.
Formula
5 minOpen
PhysicsBeginner
Linear Velocity
Measures the rate of change of an object's position along a straight path.
Formula
4 minOpen
PhysicsBeginner
Linear Acceleration
Measures the rate at which an object's velocity changes over time.
Formula
4 minOpen
PhysicsIntermediate
Angular Velocity
Measures how fast an object rotates or revolves around an axis.
Formula
5 minOpen
PhysicsIntermediate
Angular Acceleration
Describes the rate at which an object's angular velocity changes over time.
Formula
5 minOpen
PhysicsIntermediate
Centripetal Acceleration
The acceleration an object experiences when moving in a circular path, directed towards the center of the circle.
Formula
5 minOpen
PhysicsBeginner
Newton's Second Law of Motion
Relates the net force acting on an object to its mass and acceleration.
Formula
5 minOpen
PhysicsIntermediate
Impulse Moment Principle
Relates the angular impulse applied to an object to the change in its angular momentum.
Formula
6 minOpen
PhysicsIntermediate
Conservation of Linear Momentum
The total momentum of an isolated system remains constant.
Formula
6 minOpen
PhysicsIntermediate
Conservation of Angular Momentum
In an isolated system, the total angular momentum remains constant.
Formula
6 minOpen