Mechanics Forum

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High School Why does the liquid stay in the straw?
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60K
High School Increase of mass effect on orbit
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14
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37K
Graduate What forces are at play when a sculptor's punch is used to carve stone?
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8K
High School A helicopter flies off, its propellers rotating. Why doesn't the body
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3
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4K
Graduate What Happens to an Object Rotating Near Light Speed When It Suddenly Stops?
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Undergrad Coefficient of restitution and damping
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6K
High School Really simple gravitational question
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4
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2K
High School What the heck is ionized hydrogen?
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17
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35K
Undergrad Can I Throw a Ball 120 Feet in My Office Without Hitting the Ceiling?
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11
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3K
High School How can acceleration be perpendicular to velocity at any given time?
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6
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3K
Graduate Rolling Cans: Hypothesizing the action inside
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5
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9K
High School Calculating Gravitational Acceleration
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6
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6K
Undergrad Torque Wrench Tool Calculation
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33
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81K
Undergrad Seesaw physics and center of mass
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7K
Graduate Idea of Rolling, Rotation, and Transition
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1
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2K
Undergrad Elastic Collision, Finding Angles Between Particles
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1
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6K
Undergrad Calculating Max Height of a Bouncing Basketball
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8
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7K
Undergrad Understanding how a projectile that moves in a parabolic path
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2
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2K
High School Acceleration due to Gravity - Newton's 2nd?
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4
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5K
Graduate Forces on a falling sphere in a liquid
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2
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3K
Undergrad Mechanical properties of Solids Concept
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11
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5K
Graduate Convert from unit vector to (maybe) special euler angles on a machine tool
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2
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8K
Graduate Discover Reliable Information on Eductors for Fluid Dynamics Calculations
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3K
Undergrad Accelerating ions using Van de Graaff help
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3K
High School Easy conceptual mechanics question
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2K
Undergrad Vector Equation Help: Solve Radial Acceleration
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1
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2K
Graduate Ballistics, hydrodynamics - tensile cavitation in tissue and fluids
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2
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4K
High School Why does dipping a stick into water on a balance cause a decrease in weight?
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10
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4K
Graduate Inclined Bar Translation: Understanding the Physical Meaning of Moments
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1
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2K
Graduate Can an Iron Ball Find Equilibrium in Deep Desert Sand?
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9
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2K
Undergrad Understanding the Water Battery: A Mystery Explained in Simple Terms
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13
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4K
Undergrad Buoyancy in Compressed Air: Can Objects Float or Will They Fall Due to Gravity?
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16
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4K
Graduate Laundau's derivation of the law of inertia
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9
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4K
Graduate What Are the Dynamics and Stability of Forced Undamped Harmonic Oscillators?
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4
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3K
High School Harnessing Sun's Heat & Light: Energy Conservation
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2
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2K
Undergrad Newtons three laws of motion from a single rule.
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12
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4K
Undergrad Data Table help (for a wind tunnel (Lifting force etc.)
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9
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3K
High School Calculate Force: Meters & Seconds^2
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3K
Undergrad Tube Buoyancy Question: How Much Force Is Needed?
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3
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3K
Undergrad Uniformly Accelerated Motion for Short Distances
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2K
Graduate Layers of gravity and kinetic force - us to galaxy
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8
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3K
Undergrad 3D Velocity Of A Moving Object To A Stationary Object
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3
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6K
Undergrad Is a hovering helicopter doing work?
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19
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7K
Undergrad Calculating G Force from 250km/h to 80km/h in 80m - Chris
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11
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128K
High School Paper Bridge Project: Design for Holding 20+ lbs with 1 Sheet of Paper
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10
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15K
Undergrad Earth as return path for power transmission line?
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15
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15K
Undergrad Can Jet Engines Accelerate a Spacecraft in Empty Space?
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8
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9K
Undergrad How does physics relate to water pollution?
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8
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9K
Undergrad Acceleration and velocity when time and distance are known
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2K
Undergrad Buoyancy of object on telescopic riser with only part of its bottom in water
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2
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3K
Graduate Frequentist statistical mechanics
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2K
Graduate Understanding the Helmholtz free energy, what does 'useful work' really mean?
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3
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7K
High School How Is Torque Related to Frictional Force?
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7
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2K
Graduate Calculate velocity of an oobject falling trhough a medium
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2K
Undergrad Tangental acceleration from given centripetal acceleration and a range of radii
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6K
Undergrad Trajectory Graphs: Direction of Velocity & Acceleration
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6
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11K
Graduate Lagrangian: Inverted telescoping pendulum (robot leg)
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10
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4K
Undergrad Water Pipe Boyle's Law Mystery.
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10
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8K
Undergrad Force Distribution in Wind Tunnel Experiments
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2
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2K
Undergrad How to determine nature of frame (inertial/non inertial)?
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13
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4K
Undergrad High Jumpers: Advantage of Jumping Technique
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Undergrad Standing waves hanging in pulley problem
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3K
High School How can I create a weighted pulley system that is heavier on the way down?
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4
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4K
Graduate Can Objects Move with Complex, Infinity Velocities?
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High School What does per second per second mean?
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High School Simple explanation - wings in an aeroplane
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12
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7K
Graduate Infinite Rocks Collide: Is the Impact Elastic?
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2K
High School Why is gravity, on earth, approximatley 9.81 m/s[SUP]2[/SUP].What
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5K
Graduate What is the relationship between escape velocity and orbital velocity?
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4K
Undergrad Jump in Elevator in Weightlessness: Can You Do It?
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3K
Undergrad Static, kinetic and rolling friction when rounding a flat curve
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8
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9K
Undergrad Does Water Pressure Change Inside a Cave at the Bottom of the Ocean?
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9
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4K
Graduate Simulating motion in 1D with varying jerk?
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4K
Undergrad Delay to transmit pressure in water
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9
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3K
Undergrad Some question about Spring force and Deformation
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3
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2K
Undergrad Falling on a Planet with No Atmosphere: Observing a Thrown Ball
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11
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3K
Undergrad Why do we need the s-2 when describing force/energyetc?
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3K
High School Question about potential difference.
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2K
High School Is Bernoulli's Principle Related to Potential Energy and Lifting Water?
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8K
Undergrad Why mass of spring/string assumed negligible?
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6K
High School Direction of vector displacement
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2K
High School Random questions: explain BB gun bullet dent in (regular) glass?
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2
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Undergrad Doubt with centripetal acceleration
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3
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2K
Graduate Are we push or attracted to a planet?
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7K
Undergrad Closed System and Center of Mass
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10
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5K
Graduate Lift via accelerating static air gas particles down?
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8
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4K
Undergrad Instantaneous velocity doesn't actually exist?
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22
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8K
Undergrad Understanding Negative Pressure: Myth or Reality in Gases and Liquids?
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31K
High School Pressure/GPM/Diameter Calculations
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4
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69K
High School How to build a powerful single celled battery
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2
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10K
Graduate Understand the Paradox of Rigid Body Acceleration
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5K
Undergrad Can You Calculate Projectile Top Speed Using Acceleration Data?
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2
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2K
Undergrad How can i calculate the speed of an object in water
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3
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23K
High School Understanding Friction on Slopes: Choosing Between Cos and Sine Components
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2
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2K
High School How many hydrogen atoms are there in a 5 sample of pure hydrogen?
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4
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4K
Graduate Calculating Air Compliance & Cylinder Volumes with Weight
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4
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3K
Undergrad How Do You Convert Sound Pressure from Decibels to Force in Newtons?
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2
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3K
Graduate Rotating Cylinder - Understanding Gas Pressure and Density
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1
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6K
Graduate Inverted spring pendulum & control torque
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4K
Graduate Exploring Liouville's Theorem with Susskind's Lectures on Statistical Mechanics
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4
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6K