Mechanics Forum

Post thread
Undergrad Escape velocity and gravitational potential energy
  • · Replies 10 ·
Replies
10
Views
7K
Undergrad Is the tension of the string same or not?
  • · Replies 4 ·
Replies
4
Views
3K
High School Third Newtonian law most fundamental
  • · Replies 6 ·
Replies
6
Views
3K
Graduate How Long Does It Take to Empty a Tube Using Bernoulli's Equation?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Lagrangian mechanics for a varible mass
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Speed of Electric Field: Is it the Speed of Light?
  • · Replies 2 ·
Replies
2
Views
2K
High School Instantaneous Velocity methods
  • · Replies 7 ·
Replies
7
Views
33K
Undergrad When conservation does not apply
  • · Replies 2 ·
Replies
2
Views
2K
High School Why Is It Harder to Lift Someone When They Are Asleep?
  • · Replies 5 ·
Replies
5
Views
49K
High School Pressure in Liquids: Why It's Shape-Independent
  • · Replies 2 ·
Replies
2
Views
3K
High School Creating a Rube Goldberg Machine with Levers and Pulleys
  • · Replies 8 ·
Replies
8
Views
11K
High School Observing Ink Points in Water: What is the Motion?
  • · Replies 17 ·
Replies
17
Views
31K
High School What Factors Determine the Direction of a Pulse in a Stretched Rope?
  • · Replies 18 ·
Replies
18
Views
5K
Undergrad Bullet Velocity Matching Gravity on a High Platform?
  • · Replies 24 ·
Replies
24
Views
5K
Undergrad Model Damped Harmonic Motion with Y=(e^ax) Sin/Cos bx
  • · Replies 7 ·
Replies
7
Views
7K
Undergrad Flywheel Physics: Power & Inertia Explained
  • · Replies 4 ·
Replies
4
Views
10K
Graduate Solving the Angle Required to Hit a Moving Target with Ballistic Projectiles
  • · Replies 1 ·
Replies
1
Views
4K
High School How Do Spring Constants and Resistor Formulas Compare?
  • · Replies 4 ·
Replies
4
Views
6K
Undergrad Why does a rocket need fire in its tail
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Modeling Planetary Motion with Newton's Law of Universal Gravitation
  • · Replies 2 ·
Replies
2
Views
6K
Undergrad How is kinetic energy related to momentum in terms of velocity?
  • · Replies 2 ·
Replies
2
Views
2K
High School What is the weight of air in a 30 gallon tank at 100 PSI?
  • · Replies 3 ·
Replies
3
Views
22K
Undergrad Energy/Power content of Gasoline
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Making a Wooden Airplane: Will Airfoils Help?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Doppler and enegry conservation
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Understanding Tension: Confusion about Coupling & Forces
  • · Replies 10 ·
Replies
10
Views
5K
High School Physics of Air Fans: Number of Blades & Flow Rate
  • · Replies 3 ·
Replies
3
Views
8K
Undergrad How does a negative ion generator work?
  • · Replies 1 ·
Replies
1
Views
9K
Undergrad Explaining Football Physics to a 12 Year Old
  • · Replies 1 ·
Replies
1
Views
8K
Undergrad 3D Vector Physics (practical situation)
  • · Replies 3 ·
Replies
3
Views
7K
Graduate Angular momentum in eliptical orbits
  • · Replies 6 ·
Replies
6
Views
5K
Undergrad Does Rolling a Basketball on Roadbase Compare to a Golf Ball on AstroTurf?
  • · Replies 8 ·
Replies
8
Views
3K
High School Why do masses cancel out when calculating y-components of momentum?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Momentum with kinetic friction
  • · Replies 2 ·
Replies
2
Views
2K
High School Speed vs Velocity: Difference & Examples
  • · Replies 4 ·
Replies
4
Views
45K
Undergrad Forces at play during Cutting ?
  • · Replies 9 ·
Replies
9
Views
5K
Undergrad Can gyroscopic forces stop rotation?
  • · Replies 8 ·
Replies
8
Views
5K
Undergrad Spinning ball and its trajectory
  • · Replies 6 ·
Replies
6
Views
5K
High School Compressed Chamber: Perfect Vacuum, Pull Apart?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad How Does Firing a Rifle Illustrate Kinetic Energy and Momentum?
  • · Replies 6 ·
Replies
6
Views
3K
High School Rotational weight vs dead weight
  • · Replies 3 ·
Replies
3
Views
6K
High School What Are the Major Types of Power Stations?
  • · Replies 1 ·
Replies
1
Views
22K
Undergrad Confused about Free Energy relation to Pressure & Concentration
  • · Replies 1 ·
Replies
1
Views
5K
High School Newton's Third Law: Equal & Opposite Forces?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Falling From a Boat: Relative Velocity Explained
  • · Replies 6 ·
Replies
6
Views
2K
High School Equal work lifting versus pushing up a plane?
  • · Replies 11 ·
Replies
11
Views
21K
High School Does inertia apply to everything in the universe? Even subatomic?
  • · Replies 8 ·
Replies
8
Views
6K
Graduate Efficiency: Work, Limits, and Zeno's Paradoxes
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Gibbs energy=chem potential (not convinced)
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Do Heavier Objects Fall Faster in a Vacuum Experiment?
  • · Replies 19 ·
Replies
19
Views
4K
Undergrad Does Gravity's Speed Affect Paper Falling During a Clap?
  • · Replies 2 ·
Replies
2
Views
2K
High School Find Your Place in the Universe: Calculations & Ideas
  • · Replies 2 ·
Replies
2
Views
2K
High School Why Does Snowfall Make Everything Seem So Quiet?
  • · Replies 1 ·
Replies
1
Views
2K
High School Understanding the Difference Between Mass and Weight: Explained in Simple Terms
  • · Replies 17 ·
Replies
17
Views
6K
Undergrad Physics on a stake in the ground
  • · Replies 2 ·
Replies
2
Views
3K
High School What is the terminal velocity of a quarter?
  • · Replies 6 ·
Replies
6
Views
36K
Undergrad Centrigugal force slingshot,the projectile is shot by the normal
  • · Replies 4 ·
Replies
4
Views
6K
Graduate A paradox inside Newtonian world
  • · Replies 514 ·
18
Replies
514
Views
61K
High School Def'n: mass vs. weight / kg vs. lbs
  • · Replies 27 ·
Replies
27
Views
25K
Undergrad Fluid Dynamics and the Francis Formula
  • · Replies 2 ·
Replies
2
Views
14K
High School Question involving a stream of fluids
  • · Replies 2 ·
Replies
2
Views
2K
High School Calculating Airbag Deployment Speed in a Car Accident
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Deep Glider, depth, and bouyancy
  • · Replies 4 ·
Replies
4
Views
4K
High School How can I create a device that indicates the direction of sound source?
  • · Replies 1 ·
Replies
1
Views
4K
High School -friction Is Independant Of Surface Area-
  • · Replies 5 ·
Replies
5
Views
6K
Undergrad Newbie Asks: Can I Discuss Recoil and Impact Here?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Drop a stone in ocean and it takes years to sink?
  • · Replies 16 ·
Replies
16
Views
23K
Undergrad Two Hookean Springs Connected in Series
  • · Replies 5 ·
Replies
5
Views
8K
Undergrad Two masses connected by constant distance
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How to determine earth's weight
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Do 2 equal gravitational pulls cancel?
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Gravity's Effect on Water Pressure in Orbit
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad A cylinder rolling down an incline
  • · Replies 5 ·
Replies
5
Views
12K
High School How Can You Safely Drop an Egg from a Balcony Without Gravity Slowing Devices?
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Dynamics of water under pressure/velocity?
  • · Replies 5 ·
Replies
5
Views
12K
Undergrad Calculating Bullet Accuracy: A Game %Guide
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Is Expansion Motion and Does It Imply Space as Something?
  • · Replies 7 ·
Replies
7
Views
3K
High School Why can an aluminum boat float?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Hamiltonian mechanics: canonical transformations
  • · Replies 3 ·
Replies
3
Views
6K
High School Will a Skimming Stone Travel Further on Calm or Wavy Water?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Punch in the Face: Maximize Effectiveness
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Classical Physics from Newton's Laws?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Vertically oriented spring and energy transfers
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Ghost Force(?) & Angular Momentum
  • · Replies 11 ·
Replies
11
Views
5K
Graduate Can Conservation Laws be Derived from Symmetry and Newton's Laws?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad If gravity were to double, what would that mean for automobiles?
  • · Replies 9 ·
Replies
9
Views
5K
Undergrad Golfing on the Moon: Can a Ball Achieve Orbit?
  • · Replies 3 ·
Replies
3
Views
3K
High School Angle Symbol T: Meaning & Degrees | FAQ
  • · Replies 2 ·
Replies
2
Views
2K
High School How Can You Increase Air Pressure in Pipes?
  • · Replies 5 ·
Replies
5
Views
4K
Undergrad Does a Fly's Weight Affect a Light Aircraft?
  • · Replies 29 ·
Replies
29
Views
5K
High School Freefall Impact Force: Calculate Equation
  • · Replies 12 ·
Replies
12
Views
6K
Undergrad Gas pressure v. energy density
  • · Replies 14 ·
Replies
14
Views
22K
Undergrad Is torque a necessary defenition?
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Ringing a bell - How much energy is lost to sound?
  • · Replies 10 ·
Replies
10
Views
7K
Graduate Is anyone of you learning Statistical Mechanics ? come and let's learn together
  • · Replies 3 ·
Replies
3
Views
7K
Undergrad Construction of the Roman Onager (catapult)
  • · Replies 5 ·
Replies
5
Views
21K
Undergrad Gravity and centrifugal forces
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Calculating Torque with Angled Forces: A New Perspective
  • · Replies 3 ·
Replies
3
Views
8K
High School Rolling Down a Ramp: Tube of Water vs Dirt - Which is Faster?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad What does the impact parameter represent in particle scattering?
  • · Replies 2 ·
Replies
2
Views
3K