Mechanics Forum

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Why is a negative sign included in Equation (6) for central-force motion?
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Keeping helium in an unsealed balloon?
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8
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Building a Mousetrap Car for High School Physics Class
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3
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The concept of a force lifting a weight and the work done
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30
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Work: Dot Product and Integral?
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7
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What motor/payload mass ratio -> payload spins the motor
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11
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Calculating Tension in a Suspended Rope with a 50kg Weight
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2
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How Does Pressure Affect Dissolved Oxygen in Water Systems?
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When boiling water, what is the degree of freedom inside the vapour dome?
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5
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Kinetic friction direction on two stacked blocks
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5
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Max. acceleration of a pendulum changes with its length and mass?
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1
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Puzzle: propagation of momentum in water
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Question about a stretched string's motion at the free end
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8
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Why do bubbles of air in water move up?
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13
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What force is preventing car wheel bolts from being removed?
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80
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Acceleration for a curved trajectory
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3
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How Much Energy Does a Dieter Use by Lifting Weights?
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Effect of ambient pressure on Newton cooling (water)
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Derivation of D'Alembert equation (for pressure waves)
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3
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Elongation of a spring in a two mass system
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6
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"A sharp sound is perceived as being more intense than low"
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14
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Understanding Friction and Tension in Static vs. Dynamic Scenarios
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18
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Oscillators and conservation of energy
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13
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Doubts about the mechanics of walking
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26
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Measuring the weight of gas in an inflated balloon
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7
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Is there place for higher order derivatives in mechanics?
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5
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Simple Pendulum: Oscillatory & Periodic Motion
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10
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Resonance between spring and pendulum: Different frequencies
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4
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Why is 'the velocity' in circular motion changing?
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8
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Why does the partial pressure of H2O stay the same
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3
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Why doesn't the Spring Force change on splitting?
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1
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Water drag lines - what's it called?
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17
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The formulae for kinetic energy and Joules
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12
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Why do Harmonics Decay Faster than the Fundamental?
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19
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Entropic springs and Hooke's springs -- differences?
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1
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A manometer measures mechanical or thermodynamic pressure?
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1
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KiloNewton/Pound foot of thrust into Horsepower units
3
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110
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Does the speed of sound change in metal when heated?
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4
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2 Different Ways to Write Potential Energy of a Pendulum
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2
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PressureDrop/Pressure/Volumetric flow rate calculation (in a Pipe)
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5
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Speed of fluid in a turbulent flow
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3
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Simple Harmonic Motion: why sin(wt) instead of sin(t)?
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3
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Momentum transport in gases in 2d
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3
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Why are central force fields irrotational and conservative?
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10
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Understanding the 1-D Kinematics Equations
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8
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Kinetic energy loss in disintegrated matter
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4
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Carbon dioxide in liquid and gaseous phases with liquid water
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4
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Momentum, Energy, and Elastic Collisions
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4
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Projectile motion with non-uniform gravity.
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1
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What is water impact velocity formula?
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1
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Measurement and Graphing. Dependence of a Pendulum on length
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1
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What gives gravity its power to accelerate objects?
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8
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What is the moment of inertia for a water bottle?
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5
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How to make my Kelvin's Water Dropper work?
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7
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Lift and Drag force in a Wind Tunnel
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10
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Uniform circular motion and conservation of energy
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22
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Weight of a box with a flying bird
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16
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Velocity of a particle at time t in a rotating frame
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17
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The physics of the inclined pushup
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24
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Could a <1g acceleration vehicle escape Earth's gravity well
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31
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Equation for the resolving power of a microscope?
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3
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2K
Is it possible to work out when the object stopped accelerating?
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4
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1K
How Do You Calculate the Counterweight Needed to Balance an L-Shaped Bar?
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4
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Prove equation of motion is unchanged under Galilean transformation
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3
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Would there be turbulence around objects w/o boundary layers
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3
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Momentum vs Work: Find Out in Super Hero Experiment
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8
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Bulk Angular Momentum: Definition & Explanation
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4
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What is pressure accourding to Bernoulli's theorem?
2
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52
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Using the lift equation, can you make anything fly?
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24
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Why do sound waves not bounce off of each other?
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20
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Solving the differential equation of planetary motion
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3
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Inertial Integrity in Space Flight: Questions Answered
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6
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Force of a Punch to exceed the Max Static Friction Force
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3
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Why do we need the Lagrangian formulation of Mechanics?
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8
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Pendulum Work: Calculating the Net Force and Work Done
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6
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Where does static friction come from in ABS?
2
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67
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Confusion about the work done by an ideal gas
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5
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Why is angular momentum conserved?
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13
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Regarding the radius in the orbital velocity
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11
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Gravitation & Orbital Mechanics: Is One Method More Correct Than the Other?
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2
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What is the force acting on a rotating body in a non-inertial frame?
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3
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Calculating Free Body Diagram Forces
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4
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How Does the Chain Rule Apply to Newton's Second Law in Calculus?
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10
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What is the relation between Bernoulli's principle & Pascal?
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7
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Distance Traveled by an object on a pulley
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17
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Impact of speed on the coefficient of rolling friction
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12
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Theories in physics that seemed to work but were wrong?
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11
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Torque & Rotation: 2 Axes, Tilting Possible?
2
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52
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Statistical Mechanics Part II: The Ideal Gas - Comments
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11
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The approximation of classical mechanics
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Various Pressures in mass transfer
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22
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How does a the vertical force of gravity end in horizontal motion?
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7
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What does it mean by 'a is constant' in motion..........'?
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4
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Formulating the kinetic energy of an object - helical motion
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9
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Does an ideal fluid have zero surface tension?
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4
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How Does Changing Propeller Weight Affect Max RPM?
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6
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Uniform Circular Motion and Centripetal Acceleration (non-intuitive)
2
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54
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Gravitational Potential Reference Point
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6
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Simple Harmonic Motion: What is Superposition of SHM?
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2
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The math around the windbag or Bernoulli bag experiment
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1
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