Mechanics Forum

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Difference between static and kinetic friction
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How can the pressure be more in liquid flowing with less speed?
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19
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Does the spring force do work on the spring itself?
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9
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Work-Energy Theorem: Is Lifting a Rigid Body Really 0 Work?
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4
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Science history, falling objects before Galileo
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18
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Would a giant orbital gravity battery be a good future power source?
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18
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Can a Y-joint at high flow velocity create negative pressure?
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Surface Tension: Why Tangential and Not Downward?
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How Does Viscous Force Relate to Velocity Gradient?
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19
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Newton's law of cooling - formula for constant k
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4
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Can this machine produce more work than consumed?
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1
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944
What is pressure energy in Bernoulli's theorem?
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6
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How to Calculate Weight on Pedals from Watts?
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15
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How to Calculate Underwater Force for Displacement?
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2
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Why doesn't pressure depend on the shape of the container?
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29
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7K
Coriolis force caused by tangential velocity
2
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53
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Potential functions for separation and isochronic gauges
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Disproving perpetual energy and perpetual motion machines.
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1
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Foucault Pendulum Release Velocity in Spherical Coordinates
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8
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Why do we feel pressure from the downside in a liquid
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5
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980
Retarded and advanced potentials
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18
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Confused about Newton's 3rd law
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22
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Unusual escape velocity derivation
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4
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Pressure Change: Understanding the Physics Behind Closing a Valve
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6
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Free Falling powder in a vacuum
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7
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Rolling Without Slipping: What Am I Missing?
2
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52
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Potential Energy and Potential -- Systems versus Particles
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6
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11K
Rigid body motion - thin disc
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1
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Can a Fish Move a Ball in Water?
6
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Rotating planet moving through space
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9
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How to make a Velocity Time Graph For Data?
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1
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Would my turning mechanism for my robot work?
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6
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855
What Does Negative Potential Energy Indicate in Colliding Iron Balls in Space?
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7
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How to advoid water condensation in compressed air piping
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Can Space-Time Differ for Ionized Fuel in a Magnetic Field Near Light Speed?
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12
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An apple falls from a tree, Does the moon move as a result?
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2
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Friction ON wheels (say a car driving or accelerating)
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29
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Block on a Plane (Classical Mechanics)
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6
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Adiabatic process in statistical mechanics
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6
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Most general dependence of acceleration
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1
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813
Negative potential energy vs Positive potential energy
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14
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How Do Momentum and Kinetic Energy Influence Collision Outcomes?
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12
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Measuring Water Temperature & Diffusion Coefficient with Pollen
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1
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Photodiode: pulsed vs. continous signal
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28
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6K
Normal acceleration of the Belt on the Pulley
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15
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Sound waves: why do air molecules oscillate?
2
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35
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Simple problem for experts.... (work done lifting weights at the Gym)
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7
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Hamiltonian Mechanics: why paths in state space never cross each other
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9
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Static friction's role in walking
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23
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Relativistic hydrodynamics: gradient expansion
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4
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Criticisms of Jaynes' approach to Statistical Mechanics
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3
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Why is the pressure reduced when the fluid flows faster?
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15
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Boiling off Liquid Argon Using A High Powered Resistor
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32
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3K
Feeling Forces (like feeling gravity while in free-fall)
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11
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Stokes' Law: Why does viscous drag depend upon the radius of the spherical body?
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4
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4K
How does force change momentum?
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Derivation of the change of air pressure with height
2
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50
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Elastic or inelastic collision?
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8
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Pressure felt by a piston, Mach number of speaker making the sound
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14
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3K
Boltzmann distribution and the number of molecules with a certain velocity
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10
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Boyle's Law and Applied pressure
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6
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Power Loss in Transmission Lines: AC vs DC Comparison Explained with a Model
2
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50
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SciAm article: Trapping the Tiniest Sound
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1
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Question about net work and displacement
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12
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Where does the energy come from in the potential difference in the Hall effect?
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11
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1K
How to relate the gravitational potential energy zero to the axes?
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4
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2K
Rotational Frame Transformations
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14
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Can Math Model Real-World Camera Focusing Dynamics?
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1
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1K
Lagrange Equations of Motion for a particle in a vessel
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2
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G forces when falling - proper acceleration question
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11
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Debate over the experimental procedure for Newton's 2nd Law
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6
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1K
Question for anyone with Morin's "Introduction to Classical Mechanics"
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7
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Pressure of captured air under water
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12
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Why is there no virtual work done by a rolling friction?
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13
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4K
Angular acceleration of a pendulum on an accelerating train
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1
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What causes that water kettle sound?
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19
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Why does a Polywell Fusion Reactor not generate net power?
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1
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What is the approximate pressure at the center of a cool Earth with no gravity?
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1
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Maximum work done by a body in an external medium
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6
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How to Determine the Axis of Rotation
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3
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Velocity Map Imaging: Understanding 3D Reconstruction
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2
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What slows an object during collision, force or loss of energy?
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13
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Newton's Law of Cooling - "k" constant
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3
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GR & QM: When Do They Disagree?
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7
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Bicycles: Question about Energy Conservation
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9
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Dumb question about inertia and rotational inertia
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34
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Uncovering the Motivation behind the Principle of Virtual Work
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6
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Zero Friction on the Moon: Driving at Constant Velocity Without Air Resistance
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8
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How to characterize a power law field?
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1
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How does inertia cause the water to stay in the bucket
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6
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Rotation dynamics, dealing with impulse and oscillation
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1
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Equalization of velocity components and momentum conservation
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16
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What is the angular velocity in the center of a rotating disc?
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6
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Calculating Speed Between Two Cars
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4
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Question regarding potential formulas
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1
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Help -- I don't understand work
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30
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Finding Potential Energy for a Chain on Pulley System
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1
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Hydrostatic behaviour - water in tube
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1
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Finding potential using poisson's equation, not a homework problem.
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1
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2K
Bar hanging from two springs with unequal masses
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7
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2K

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