Classical Physics Forum

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Join expert classical physics discussion on the principles developed before the rise of relativity and quantum mechanics. Including mechanics, electrodynamics, thermodynamics, optics.

Mechanics

High School Mousetrap Car Energy efficiency

Optics

Undergrad How do I stretch a laser from a beam into a sheet?

Thermodynamics

High School Using battery energy to heat a battery…

Electromagnetism

Undergrad What determines if wave components are independent vs coherent?
High School Electric field on the equatorial line of a dipole
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High School Rolling Without Slipping on an Inclined Plane
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High School Electric Field Inside a Hollow Sphere
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Graduate Eigenvectors of the Permittivity Tensor in Periodic Dielectrics
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High School Is there any physics topic explaining how objects break into parts?
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High School How is the magnet being affected in this diamagnetic application?
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High School Force required to stretch training resistance bands
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Undergrad How Does Changing Mass and Spring Force Affect Watch Oscillators?
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High School Work Done By Conservative Forces
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Undergrad Fluorescent lamps And Fan remote
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High School Is an ellipsoid the best shape for a BBQ?
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Undergrad Can Couette Flow with Wavy Plates?
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High School Calculating Heat from Drag force on a Rocket Airframe
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Undergrad Different results for the Range of a projectile
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Undergrad Electret with circular electric field
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Undergrad A problem regarding power output in cycling
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Undergrad Is this analogy between Magnetic Force and Gravitational Force accurate in helping to understand what contributes more to a stronger magnetic force?
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High School Curious about Work and Energy Consumption
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High School Determine forces acting on double inclined plane
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Undergrad Can I Apply Voltage to Non-Conducting Plates?
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Undergrad Does Pipe Angle Affect Hydrostatic Pressure?
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Undergrad What year were Navier-Stokes equations introduced?
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Undergrad Producing enough force with a Solenoid
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High School Curious about the work - energy theorem
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High School Why Did My Tennis Serve Bounce Unusually Low?
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Undergrad Is shear stress at the pipe wall the same for turbulent and laminar flows?
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High School How to determine applied force when two objects collide? (basic physics engine)
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High School Is the Sun's Magnetic Field About to Flip?
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High School Can Lasers Really Create a Functional Light Saber?
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Undergrad Shouldn't the pressure difference along a pipe be a negative number?
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Undergrad Claude Naiver work on Navier-Stokes equations
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Undergrad Is current truly a scalar quantity or a tensor?
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Undergrad How does friction in a pipe occur, with the "no slip condition" ?
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High School How will a spring stretch in the following cases?
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Undergrad Rotational stability and Fosbury Flop questions
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Undergrad A Question About the Physical Explanation Behind Torque
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High School Extending the Lagrangian of a double pendulum to more complex systems
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High School What happens when electrons flow in two opposite directions in an electrical circuit?
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High School The total voltage drop in a series RLC circuit
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High School Would the following test be proof of a successful propulsion system?
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High School A question about induced current in LC circuits
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Undergrad What is Surface Plasmon Resonance?
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Undergrad What are the properties of a Sound Pressure Wave going down into a Cone?
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Undergrad Excel projectile trajectory
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High School Why does a magnet attract metal objects?
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Undergrad Using a tuning fork vs computer tuner for violin
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High School Multiple frequency EMFs and capacitors
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High School How's it possible to push on systems with 2 parts? (Newton's third law)
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Undergrad Finding Escape Velocity of mass (m) with electrostatic and gravitational influences
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Undergrad RF Power Transfer: Halbach vs. Dipole
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High School Normal force in case of inclined plane and banked turn
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Undergrad Why does my ball launcher spin the ball and not launch it (air)?
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Undergrad Derivation of Fluid Pressure In A Gravitational Field
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Undergrad Directional magnetic field
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Undergrad Only one type of elementary electric charge?
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High School Why does a coin take 2 full rotations around another coin?
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High School Initiation and the math behind Arc Discharges
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Undergrad Plane wave decomposition of the fields of a dipole antenna
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High School Speed is distance multiplied by time -- Is this correct?
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High School Why do capacitors not discharge everything immediately in LC circuits?
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High School A car collides with a bus, who experiences a greater change in momentum?
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Undergrad Origin of Centripetal force when the net force toward the center is 0?
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High School Why is my experimental spring constant an order of magnitude off?
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Graduate New magnetic field imaging technology with 100 nm resolution
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High School Generating Energy from Molecular Motion
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Undergrad Question Regarding Force Being Equal, Even Moving Upwards (if V=0)?
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High School The relationship between mc^2 and mc^2 x 1/2
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Undergrad Archimedes' principle and the column of water
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High School Found a circuit where current is zero across an ohmic device (dV>0)
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Undergrad What is the actual definition of the position of an object?
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High School Energy required to bring 1 kg 1000 meter above the surface of the Earth
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High School Action-reaction of a sailing boat and wind
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High School Sign conventions in torque and non-uniform circular motion
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Undergrad Questions about a Laser Interferometer pattern
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Undergrad What is the zero point for Potential Energy and how to find it from integral limits?
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High School Sound Intensity doubles if number of noise sources double?
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Undergrad Could vibration carry electricity or something else?
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Undergrad What's the physical meaning of Curl of Curl of a Vector Field?
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Graduate Rotation speed for a particular system under gravity
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Graduate Retarded time and advanced time (and binning)
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High School Conceptually understanding change in potential energy with 0 net work
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Undergrad Electric Potential in circuit
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Undergrad How Do Time-Varying Currents in Conductors Generate EM Fields and Waves?
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Undergrad Newton's 2nd law for an object in free fall
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High School What forces act on a bar when you do pull-ups?
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High School What Causes the Void Formation in Discarded Yogurt During Disposal?
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Undergrad Sun shade on Earth ground, is it a straight line or a curved line?
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Graduate Question about Kelvin’s circulation theorem
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High School Sine wave noise at different frequencies
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High School Inertial Mass vs Gravitational Mass
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High School How does gravitational field exert gravitational force on a body?
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High School Understanding the electric field
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Undergrad Why Does Differential Pressure Vary As The Square Of The Flow?
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High School Airflow around a vertical cylinder (such as a cigar)
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Equations of motion of an electron emitted from a surface
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Undergrad Frame Transformation in rigid bodies
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Undergrad Infinite flow with capillary tubes?
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Undergrad Feynman lectures on physics: random walk
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Undergrad Is there a way to calculate how rocket exhaust gas spreads out in empty space after leaving the rocket?
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Undergrad Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
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