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Normal force

The force exerted by a surface against an object that is pressing against the surface. The force is exerted perpendicular to the surface.

Physics Dictionary

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Friction: Key Terms

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Forces: Key Terms

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Free Body Diagrams: Key Terms

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Inclined Planes: Key Terms

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Friction: Key Terms

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Newton's Second Law: Key Terms

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Key Terms

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BoxSand

  • Review and Vectors
    • General Review
      • Lecture 1 | Review
    • Vector Operations
      • Lecture 1 | Vectors
  • Kinematics
    • Average Quantities
      • Lecture 1 | Position and Displacement
      • Lecture 2 | Average Velocity and Acceleration
    • Graphical Analysis
      • Lecture 1 | Graphical Analysis
    • 1D Kinematics
      • Lecture 1 | 1-D Kinematics of Constant Acceleration
      • Lecture 2 | 1-D Kinematics Problem Solving Strategies
    • 2D Kinematics
      • Lecture 1 | 2-D Kinematics
      • Lecture 2 | Projectile Motion
  • Mechanics
    • Forces 1
      • Lecture 1 | Forces Introduction
      • Lecture 2 | FBD and Newton's 2nd Law
      • Lecture 3 | Application of Newton's 2nd Law
    • Forces 2
      • Lecture 1 | Friction
      • Lecture 2 | Inclined Planes
    • Forces 3
      • Lecture 1 | Coupled Systems and Pulleys
      • Lecture 2 | Forces and Uniform Circular Motion
  • Momentum
    • Impulse and Momentum
      • Lecture 1 | Impulse and Momentum Theorem
    • Conservation of Momentum
      • Lecture 1 | 1-D Conservation of Momentum
      • Lecture 2 | 2-D Conservation of Momentum
  • Energy
    • Work & Kinetic Energy
      • Lecture 1 | Work and Kinetic Energy Theorem
    • Conservation of Energy
      • Lecture 1 | Potential Energy and Conservation of Energy
      • Lecture 2 | Conservation of Energy Application
      • Lecture 3 | Systems and Energy, Collisions
  • Rotational Mechanics
    • Rotational Kinematics
      • Lecture 1 | Angular Position, Velocity, and Acceleration for Non-uniform Circular Motion
      • Lecture 2 | Connecting Rotational and Translational Kinematics
    • Statics & Dynamics
      • Lecture 1 | Torque and the 2nd Law for Rotation
      • Lecture 2 | Application of 2nd Law: Static Equilibrium and Stability
      • Lecture 3 | Dynamics and Moment of Inertia
    • Rotation and Conserved Quantities
      • Lecture 1 | Angular Momentum and Rotational Energy
  • Thermodynamics
    • Microscopic Model of Gases
      • Lecture 1 | Micro view of matter, kinetic theory of gases
      • Lecture 2 | State variables and equations of state, ideal gas
    • 1st Law and Heat
      • Lecture 1 | 1st law of thermodynamics, energy transfers
      • Lecture 2 | Specific Heat, Phase Transformations, Calorimetry
      • Lecture 3 | Conduction, Convection, Radiation
    • 2nd Law and Entropy
      • Lecture 1 | Entropy, 2nd Law
    • Thermodynamic Processes and Cycles
      • Lecture 1 | Heat Engines
      • Lecture 2 | PV Diagrams, Processes
      • Lecture 3 | Cycles and efficiency
  • Fluid Mechanics
    • Fluid Statics
      • Lecture 1 | Pressure at a Depth, Pascal's Principle
      • Lecture 2 | Hydraulics, Buoyancy
    • Fluid Dynamics
      • Lecture 1 | Continuity, Bernoulli
  • Waves & Oscillations
    • Oscillating Systems
      • Lecture 1 | General Oscillations, Simple Harmonic Motion, Equations of Motion
      • Lecture 2 | SHM Case Studies: Pendulums and Springs
      • Lecture 3 | Damped Oscillations, Driven Oscillations and Resonance
    • Traveling Waves
      • Lecture 1 | Wavelength, Frequency, Speed, Equations of Motion
      • Lecture 2 | Sound, Light, Waves on a String
      • Lecture 3 | Energy and Intensity, Sound Intensity Level: Decibels
      • Lecture 4 | Doppler
    • Superposition of Waves
      • Lecture 1 | Standing Wave Resonance in Tubes and on Strings
      • Lecture 2 | General Two Source Interference
  • Optics
    • Wave Optics
      • Lecture 1 | Young's Double Slit
      • Lecture 2 | Multi and Single Slit, Spectroscopy
      • Lecture 3 | Index of Refraction, Thin Film Interference
    • Ray Optics
      • Lecture 1 | Rays, Reflection, Refraction, TIR, Dispersion
      • Lecture 2 | Formation of Images, Ray Tracing
      • Lecture 3 | Thin Lenses
  • Electric Fields & Potentials
    • Charges and the Electric Force
      • Lecture 1 | Micro-model of Charge, Q-transfer, Conductors vs. Insulators
      • Lecture 2 | Electric Forces and Coulomb's Law
    • Electric Fields
      • Lecture 1 | Field Model, Charges in an Electric Field
      • Lecture 2 | Electric Field from Point Charges
      • Lecture 3 | Electric Fields Patterns
    • Electric Potential
      • Lecture 1 | Electric Potential and Electric Potential Energy
      • Lecture 2 | EP Field Patterns and Motion of Charges
      • Lecture 3 | Connecting Electric Potential and Electric Field
  • Circuits
    • Resistive Circuits
      • Lecture 1 | Micro-model of Charge flow, Resistance, Ohm's Law, Power
      • Lecture 2 | Kirchoff's Laws
      • Lecture 3 | Equivalent Circuits
  • Magnetism
    • Magnetic Fields and Forces
      • Lecture 1 | Magnetic Fields, Magnetism
      • Lecture 2 | Magnetic Force, UCM
    • Magnetic Induction
      • Lecture 1 | Motional EMF, Induced Currents
      • Lecture 2 | Faraday and Lenz's Law
  • Sensemaking
  • Math Tools
    • Scientific Notation
    • Significant Figures
    • Dimensional Analysis
    • Units
    • Algebra
    • Mathematization
    • Basic Functions
    • Proportional Reasoning
    • Geometry and Trigonometry
    • Vectors
    • Order of Magnitude Estimations
  • Physics Dictionary
  • Resource Repositories
    • Activities Repository
    • Clicker Questions Repository
    • Content Repository
    • Demos Repository
    • Example Problems Repository
    • Labs Repository
    • Recitations Repository
    • Simulations Repository

Contact Info

OSU Introductory Physics

Copyright ©2024 Oregon State University
Disclaimer

Director of Project BoxSand: Dr. KC Walsh, walshke@oregonstate.edu

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Fall 2024

Corvallis Campus Physics 201: Homepage

Ecampus Physics 201: Homepage

Bend - Cascades Campus PH 201: Homepage

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PH20x Learning Assistants

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Acknowledgements

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