Mechanics Forum

Post thread
Undergrad What causes the anomalous expansion of water?
  • · Replies 2 ·
Replies
2
Views
2K
High School How can I keep a Newton's Cradle going for a longer time?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Best journal to publish a research in classical mechanics?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Will speed increase under these conditions?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Amyloid Fibres: Understanding Elasticity & Bending Angles
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Why Use Time Derivative Outside the Integral in the Continuity Equation?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Deriving Precession from First Principles
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Why Don't Unit Vectors in Cartesian Coordinates Change with Time?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate What are the conditions to excite an atom by collision?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Determine supersonic flow velocity, tank to regulator topipe
  • · Replies 3 ·
Replies
3
Views
2K
High School How to prove V=-(GM)/r without applying calculus?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Rolling Friction: Understanding the Catch
  • · Replies 9 ·
Replies
9
Views
2K
High School How to evaluate the work done by spring without applying calculus
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Centripetal Velocity Calculation?
  • · Replies 5 ·
Replies
5
Views
1K
High School Looking for a source for equation for power
  • · Replies 8 ·
Replies
8
Views
1K
Undergrad Conservation of angular momentum
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Amplification of sound in a pipe
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Why is low surface energy important for water droplets on hydrophobic surfaces?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Nonconservative Force: Understanding Force of Friction
  • · Replies 8 ·
Replies
8
Views
3K
Graduate How to convert orbital momentum into spin momentum?
  • · Replies 1 ·
Replies
1
Views
1K
Is sound a renewable energy or non-renewable energy?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Can Volume Moments Be Converted to Mass Moments for Non-Uniform Density Objects?
  • · Replies 1 ·
Replies
1
Views
2K
High School Does a lever/fulcrum reaction demonstrate Newton 3rd Law?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Component of Force downward on Loppers (the kind for trimming bushes)
  • · Replies 4 ·
Replies
4
Views
1K
Graduate Collisions of more than two bodies
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad How to measure mass for an object of changing mass?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Suborbital docking - Apollo Landings
  • · Replies 10 ·
Replies
10
Views
2K
Graduate How much could the Earth's rotation speed up?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Is a Vertically Hung Spring Mass System SHM?
  • · Replies 8 ·
Replies
8
Views
2K
High School Can boiling water inside steel cube make it explode?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Friction Properties: My Understanding & Assumptions
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Deriving s(t) from a x-y plane
  • · Replies 1 ·
Replies
1
Views
932
Undergrad Understanding Force Formula: ρ AV1 (V1 - V2 cos θ) vs ρ A(V1 - V2 cos θ)
  • · Replies 1 ·
Replies
1
Views
1K
High School People lifting themselves with simple fixed pulley
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Break Strength of Net: Falconer's Question
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Equation for Simple Harmonic Motion?
  • · Replies 6 ·
Replies
6
Views
6K
Undergrad Relationship between velocity, acceleration, and a circle?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Can Calculating a Horse's Leg Spring Constant Predict Jump Heights?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Spring Constant in Hooke's Law
  • · Replies 3 ·
Replies
3
Views
2K
High School How does the illusion with three boxes and weight perception work?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Derivation of Minkowski norm of the four-momentum
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Inverse square law in gravitation
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad What variables affect the amplitude and equilibrium of waves and springs?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate What is quantum angular momentum
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Does the Mass of an Accelerometer Affect Vibration Frequency?
  • · Replies 18 ·
Replies
18
Views
2K
High School Catapult: Rotating Throwing Arm to Reduce Air Resistance?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Rotating Stator: Permanent Magnets & Rotor Polarity Change
  • · Replies 3 ·
Replies
3
Views
1K
High School Does density affect sinking speed?
  • · Replies 26 ·
Replies
26
Views
23K
Graduate Flow rate of water from thin tubes under high g-force
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Downward Turbulent Flow in a Vertical Tube: Pressure Change
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Resonance vs Flutter: Explaining the Tacoma Narrows Bridge Collapse
  • · Replies 9 ·
Replies
9
Views
7K
Undergrad Rotating & Moving Spheres: What Causes Torque & Force?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Solving Tension Questions: 2Ftcos(theta) = mg
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Physics of Dropping Bombs from Stationary Aircraft
  • · Replies 15 ·
Replies
15
Views
4K
Graduate What is the (higher order) time derivative of centripetal acceleration?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Lagrange's Equations: Know When to Use Each
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad How is it that fluid velocity increases by a low pressure
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad How do friction and rotation affect tension in pulley systems?
  • · Replies 2 ·
Replies
2
Views
3K
High School Archimedes principle and passing gas
  • · Replies 1 ·
Replies
1
Views
2K
High School Does Kinetic and Static Friction Act Simultaneously on a Moving Body?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Non-Zero Potential Energy in SHM: Is Spring Stretched in Mean Position?
  • · Replies 5 ·
Replies
5
Views
2K
High School What is the mathematics that took us to the moon?
  • · Replies 9 ·
Replies
9
Views
2K
High School Hooke's Law and plastic materials
  • · Replies 5 ·
Replies
5
Views
11K
Undergrad PSI required to minimize air mattress displacement
  • · Replies 5 ·
Replies
5
Views
12K
Graduate Finding the velocity of a wave
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Bernoulli effect at spray nozzle
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Help with Coherent Wave Questions
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Is Bending the Bar in Powerlifting an Effective Technique?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Taylor expansion of a scalar potential field
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Doubt on equipotential surfaces
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Third Law of Motion: Elevator Question
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Roller coaster - uniform circular motion
  • · Replies 19 ·
Replies
19
Views
4K
Graduate Newtonian formulation/proof of Noether's theorem
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Angular momentum in a two dimensional world
  • · Replies 15 ·
Replies
15
Views
4K
Graduate Gyroscope behaviour during 24 hours on earth
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Does an airfoil moving at 350m/s create a sonic crack?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Understanding Accelerating Pulley Systems: Tension, Forces, and Analysis
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Precession, Weight & Conservation of Angular Momentum
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Does the angles of incidence affect speed in glass
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad Archimedes' Buoyancy: Which Ball Will Experience a Greater Buoyant Force?
  • · Replies 37 ·
2
Replies
37
Views
9K
Undergrad Is it possible for a person in motion to fall over a ledge?
  • · Replies 15 ·
Replies
15
Views
3K
Undergrad Rolling Fricition, Kinetic Friction
  • · Replies 6 ·
Replies
6
Views
1K
Undergrad 1D Elastic Collision in CM frame
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Why is the "escape velocity formula" the "escape velocity"?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Increase Phase Velocity by Losing Power ?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Why flow has high velocity when partially closed?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad How do you calculate joules necessary to rotate an object?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Translational approach to precession
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Tensile and compressive forces
  • · Replies 2 ·
Replies
2
Views
7K
Undergrad Velocity as a fundamental quantity.
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Positive and negative work in terms of energy.
  • · Replies 6 ·
Replies
6
Views
6K
Undergrad Motion under gravity and forces
  • · Replies 2 ·
Replies
2
Views
1K
High School Work done by and against a force
  • · Replies 39 ·
2
Replies
39
Views
16K
Graduate Why Does the PREM Model Predict Increasing Acceleration Towards Earth's Core?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Liquid-Vapor Equilibrium and Vapor Pressure
  • · Replies 15 ·
Replies
15
Views
4K
High School Work done for stationary object
  • · Replies 6 ·
Replies
6
Views
5K
High School How do hydrogen and oxygen mix?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Reversible Work and Irreversibility
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Relation between Tension and net force
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Wake drag of moving/stationary flat plates: Not identical?
  • · Replies 40 ·
2
Replies
40
Views
5K