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Undergrad Treating the object as material point in kinematics

May 22, 2011 · Replies 12 · May 22, 2011

Replies: 12

Views: 6K

High School Freefall with constant velocity

May 22, 2011 · Replies 2 · May 22, 2011

Replies: 2

Views: 2K

Undergrad What Is the Expected Velocity of a Ball Launched by a Compressed Spring?

May 21, 2011 · Replies 1 · May 21, 2011

Replies: 1

Views: 2K

Undergrad Calculating an equations error given the error of a single value

May 20, 2011 · Replies 3 · May 21, 2011

Replies: 3

Views: 4K

Undergrad How does a simple pendulum conserve angular momentum?

May 20, 2011 · Replies 2 · May 21, 2011

Replies: 2

Views: 15K

Graduate Angular momentum of Moebius strip?

May 20, 2011 · Replies 5 · May 21, 2011

Replies: 5

Views: 2K

High School What shapes have the greatest/smallest moment of inertia

May 20, 2011 · Replies 7 · May 21, 2011

Replies: 7

Views: 46K

Undergrad What Forces are Involved in a Tennis Ball Pitching Machine Design?

Feb 2, 2011 · Replies 5 · May 21, 2011

Replies: 5

Views: 15K

Undergrad How to account for gravity on a given force?

May 20, 2011 · Replies 4 · May 20, 2011

Replies: 4

Views: 2K

Undergrad Understanding Water Pressure in Mississippi Flooding and Levee-Dwelling Homes

May 20, 2011 · Replies 3 · May 20, 2011

Replies: 3

Views: 2K

Undergrad Understanding the Center of Mass in a Hemispherical Bowl in Equilibrium

May 20, 2011 · Replies 2 · May 20, 2011

Replies: 2

Views: 3K

Graduate Please help me to work out this Mathematica pendulum problem Thanks

May 20, 2011 · Replies 2 · May 20, 2011

Replies: 2

Views: 2K

High School Does Metre Affect Vector Outcome in Calculation?

May 20, 2011 · Replies 3 · May 20, 2011

Replies: 3

Views: 4K

Undergrad Understanding Hydrostatic Pressure: Comparing Green and Orange Axis

May 20, 2011 · Replies 1 · May 20, 2011

Replies: 1

Views: 2K

Undergrad What is undamped vibration absorption ?

May 20, 2011 · Replies 2 · May 20, 2011

Replies: 2

Views: 2K

High School Resultant Force of Two Applied Forces on a Car

May 19, 2011 · Replies 10 · May 19, 2011

Replies: 10

Views: 4K

Undergrad Analytical Mechanics by Hand,Finch

May 18, 2011 · Replies 2 · May 19, 2011

Replies: 2

Views: 10K

Undergrad Problem with cats surviving high falls

May 17, 2011 · Replies 51 · May 19, 2011

2

Replies: 51

Views: 9K

Undergrad What is the role of rotation in mechanics?

May 12, 2011 · Replies 12 · May 19, 2011

Replies: 12

Views: 4K

Undergrad What condition defines a principal stress?

May 19, 2011 · Replies 2 · May 19, 2011

Replies: 2

Views: 6K

Undergrad Spring energy to rotational energy

May 15, 2011 · Replies 8 · May 18, 2011

Replies: 8

Views: 7K

Undergrad Supersonic Flight: Lift & Pressure Differences

May 17, 2011 · Replies 4 · May 18, 2011

Replies: 4

Views: 5K

Graduate Potential Energy of a Liquid - Why is it Negative for Small Molar Volumes?

May 18, 2011 · Replies 3 · May 18, 2011

Replies: 3

Views: 5K

Graduate Finding the Mistake in Falling Objects in an Elevator

May 18, 2011 · Replies 4 · May 18, 2011

Replies: 4

Views: 2K

Undergrad How Can Box2D and ActionScript 3.0 Simulate a Galton Board with Colliding Balls?

May 17, 2011 · Replies 2 · May 18, 2011

Replies: 2

Views: 2K

High School How to caclulate the acceleration of a dropped object.

May 12, 2011 · Replies 22 · May 18, 2011

Replies: 22

Views: 5K

Graduate Given a system at pressure p_sat, is the vapor mass fraction unique?

May 16, 2011 · Replies 4 · May 18, 2011

Replies: 4

Views: 3K

Undergrad No conservation of momentum with bouncing ball?

May 17, 2011 · Replies 8 · May 18, 2011

Replies: 8

Views: 14K

Graduate Ball bouncing and rotating off of surface

May 17, 2011 · Replies 1 · May 17, 2011

Replies: 1

Views: 3K

Graduate Gravitational Potential Energy and work

May 16, 2011 · Replies 8 · May 17, 2011

Replies: 8

Views: 3K

Undergrad How to Compute Poisson Ratio Correctly?

May 17, 2011 · Replies 2 · May 17, 2011

Replies: 2

Views: 3K

High School How much H.P for a sugar cane crusher?

May 16, 2011 · Replies 3 · May 17, 2011

Replies: 3

Views: 4K

Undergrad Overdamping vs. convergent oscillation

May 16, 2011 · Replies 1 · May 17, 2011

Replies: 1

Views: 4K

Undergrad Unraveling the Mystery of Rotational Motion and Moment of Inertia

May 17, 2011 · Replies 2 · May 17, 2011

Replies: 2

Views: 3K

Undergrad Integrating to solve kinematics problem, bad or good?

May 15, 2011 · Replies 9 · May 17, 2011

Replies: 9

Views: 4K

High School How Do Soundboards Amplify Sound Energy?

May 16, 2011 · Replies 4 · May 17, 2011

Replies: 4

Views: 12K

Undergrad In a closed system does pressure vary with elevation?

May 13, 2011 · Replies 13 · May 17, 2011

Replies: 13

Views: 50K

High School Kinematics question - a bet I made with a friend

May 15, 2011 · Replies 15 · May 17, 2011

Replies: 15

Views: 2K

Graduate Please help in part of derivation in retarted potential formula.

Apr 22, 2011 · Replies 6 · May 17, 2011

Replies: 6

Views: 3K

High School Does the Inside of a Wheel Spin Faster than the Outer Diameter?

May 15, 2011 · Replies 5 · May 17, 2011

Replies: 5

Views: 29K

Undergrad Is Archimedes' Principle Always Accurate in Real-World Applications?

Feb 17, 2007 · Replies 22 · May 16, 2011

Replies: 22

Views: 9K

Undergrad How Is Trigonometry Used to Calculate Forces on an Arrow's Bottom Beam?

May 16, 2011 · Replies 3 · May 16, 2011

Replies: 3

Views: 3K

Undergrad Elastic & Inelastic Collisions: Multiple Coefficents of Restitution ?

May 15, 2011 · Replies 3 · May 16, 2011

Replies: 3

Views: 9K

High School Longest hangtime for vertically-propelled rocket?

May 16, 2011 · Replies 1 · May 16, 2011

Replies: 1

Views: 3K

Graduate Maths of GPS: Understanding Wave Packet Group Velocity

May 15, 2011 · Replies 9 · May 16, 2011

Replies: 9

Views: 4K

Undergrad Dynamic Soaring: Reaching 392mph with Radio Control Gliders

Jul 22, 2009 · Replies 4 · May 16, 2011

Replies: 4

Views: 3K

High School Calculate Gravity of 3 kg Rock in Vacuum

May 15, 2011 · Replies 29 · May 15, 2011

Replies: 29

Views: 4K

High School Physics of a punch: compression, stress/strain, etc.

May 14, 2011 · Replies 5 · May 15, 2011

Replies: 5

Views: 4K

Undergrad Linear momentum conservation vs angular momentum conservation

May 15, 2011 · Replies 2 · May 15, 2011

Replies: 2

Views: 7K

Graduate Generating lift at supersonic speeds

May 14, 2011 · Replies 4 · May 15, 2011

Replies: 4

Views: 6K

Graduate Work done by a distributed force on a string

May 14, 2011 · Replies 3 · May 14, 2011

Replies: 3

Views: 3K

Undergrad Terminal velocity of 20 lb bowling ball at 40,000 feet

May 14, 2011 · Replies 7 · May 14, 2011

Replies: 7

Views: 13K

Undergrad Removing Water from Fixed Volume

May 14, 2011 · Replies 1 · May 14, 2011

Replies: 1

Views: 2K

Undergrad Solving Aerial Delivery Math Problem - Get Help Here

May 14, 2011 · Replies 3 · May 14, 2011

Replies: 3

Views: 2K

Undergrad Energy of water flowing down from a tank

May 14, 2011 · Replies 1 · May 14, 2011

Replies: 1

Views: 4K

Undergrad Explaining the Unexpected: Water Bottle Collapse

Mar 5, 2011 · Replies 4 · May 14, 2011

Replies: 4

Views: 9K

High School This may sound stupid but I have always wanted to know what exactly

May 13, 2011 · Replies 13 · May 14, 2011

Replies: 13

Views: 3K

High School Does a Seat Belt Increase Risk of Injury in a Car Crash?

May 10, 2011 · Replies 20 · May 14, 2011

Replies: 20

Views: 6K

Graduate Potential energy of an object due to two other objects

May 1, 2011 · Replies 23 · May 14, 2011

Replies: 23

Views: 4K

Undergrad Calculate Center of Pressure for Rocket - Andy

May 13, 2011 · Replies 1 · May 13, 2011

Replies: 1

Views: 4K

High School Water Hammer: Causes & Solutions

May 13, 2011 · Replies 1 · May 13, 2011

Replies: 1

Views: 3K

Graduate Speed of sound as the sqrt(elasticity/density) and why it must always be < C

May 12, 2011 · Replies 2 · May 13, 2011

Replies: 2

Views: 3K

Undergrad Weight distribution, multiple points of contact

May 13, 2011 · Replies 1 · May 13, 2011

Replies: 1

Views: 7K

Graduate Potential energy of a system of conductors

May 7, 2011 · Replies 2 · May 13, 2011

Replies: 2

Views: 2K

Graduate Analyzing the Movement of a Bicycle (requesting feedback)

May 10, 2011 · Replies 2 · May 12, 2011

Replies: 2

Views: 3K

Undergrad Calculating Air Pressure for 10-Meter Liftoff with Air Pump

May 12, 2011 · Replies 1 · May 12, 2011

Replies: 1

Views: 3K

High School Spinning at the North Pole: Equator to Arctic Teleportation

May 12, 2011 · Replies 3 · May 12, 2011

Replies: 3

Views: 2K

Undergrad The acceleration of a moving pendulum

May 8, 2011 · Replies 5 · May 12, 2011

Replies: 5

Views: 9K

Graduate Function for (damped) SHM as a linear combination of two exponentials

May 12, 2011 · Replies 1 · May 12, 2011

Replies: 1

Views: 3K

Graduate Position of a body moving by Newtons Univ. Law. of Grav., at a point in time

May 12, 2011 · Replies 1 · May 12, 2011

Replies: 1

Views: 2K

Undergrad Work energy thm and conservation

May 11, 2011 · Replies 5 · May 12, 2011

Replies: 5

Views: 2K

Undergrad Simp,e Harmonic Motion with Damping

May 11, 2011 · Replies 4 · May 12, 2011

Replies: 4

Views: 3K

High School How to calculate gravitational force?

May 10, 2011 · Replies 6 · May 12, 2011

Replies: 6

Views: 95K

High School Is Inhaling Hydrogen and Oxygen Safe for Your Health?

May 11, 2011 · Replies 5 · May 12, 2011

Replies: 5

Views: 8K

Undergrad Solving Balance Scale Math: X vs Y Weight Difference

May 11, 2011 · Replies 1 · May 12, 2011

Replies: 1

Views: 5K

Graduate What does it mean for extra dimensions to be very small?

May 10, 2011 · Replies 5 · May 11, 2011

Replies: 5

Views: 4K

Undergrad Calculating the Hydrostatic Force on the wall of a Cylindrical Tank

May 3, 2011 · Replies 3 · May 11, 2011

Replies: 3

Views: 7K

Undergrad Deceleration etardation negative acceleration

Feb 23, 2011 · Replies 22 · May 11, 2011

Replies: 22

Views: 7K

Graduate Aerodynamic Drag: Turbulent Flow & Exchange of Momentum

May 10, 2011 · Replies 5 · May 10, 2011

Replies: 5

Views: 4K

Undergrad Calculating Drag Coefficient of a Car

May 8, 2011 · Replies 3 · May 10, 2011

Replies: 3

Views: 4K

Undergrad Finding mass of Earth using the Moon and Kepler

May 10, 2011 · Replies 2 · May 10, 2011

Replies: 2

Views: 4K

High School Average force and force/tension used

Apr 3, 2011 · Replies 2 · May 10, 2011

Replies: 2

Views: 3K

Undergrad Conservation of Angular Momentum

May 9, 2011 · Replies 2 · May 10, 2011

Replies: 2

Views: 2K

Undergrad Is it possible to find orbital velocity depending on time?

May 7, 2011 · Replies 2 · May 10, 2011

Replies: 2

Views: 2K

High School Formula for Projectile Motion?

May 10, 2011 · Replies 5 · May 10, 2011

Replies: 5

Views: 12K

Undergrad How Would Tides Affect an Island Lake Connected to a Distant Ocean?

May 9, 2011 · Replies 6 · May 10, 2011

Replies: 6

Views: 3K

Graduate Simple application of euler-lagrange equation

May 9, 2011 · Replies 5 · May 9, 2011

Replies: 5

Views: 3K

Undergrad Kinetic Energy of Rotating Water Molecule

May 8, 2011 · Replies 2 · May 9, 2011

Replies: 2

Views: 5K

High School Investigation into how sound proofing actually works

Oct 14, 2004 · Replies 10 · May 9, 2011

Replies: 10

Views: 12K

Undergrad How does the concept of mass-energy equivalence relate to conservation laws?

May 8, 2011 · Replies 8 · May 9, 2011

Replies: 8

Views: 6K

Undergrad Is the Force Exerted by the Box on the Earth the Normal Force?

May 8, 2011 · Replies 1 · May 9, 2011

Replies: 1

Views: 3K

Graduate Lagrangian Mechanics Question: How do we get the T and V terms?

May 7, 2011 · Replies 3 · May 8, 2011

Replies: 3

Views: 2K

Undergrad Solving Statics Questions: Radio Tower, Fw, Fv, Fh

May 8, 2011 · Replies 3 · May 8, 2011

Replies: 3

Views: 2K

Undergrad Potential inside homogenous sphere

May 8, 2011 · Replies 2 · May 8, 2011

Replies: 2

Views: 4K

Undergrad The reason behind the inverse proportionality r^2 to the force of attraction

Apr 24, 2011 · Replies 18 · May 8, 2011

Replies: 18

Views: 6K

Graduate Why the speed increases,speed of time decreases?

May 8, 2011 · Replies 2 · May 8, 2011

Replies: 2

Views: 5K

High School 1 wire power transmission using coils.

May 7, 2011 · Replies 13 · May 8, 2011

Replies: 13

Views: 4K

Undergrad Inertia: Mass Irrelevant in Determining Acceleration?

May 3, 2011 · Replies 5 · May 8, 2011

Replies: 5

Views: 8K

Undergrad Uniform linear, circular and rotational motion

May 7, 2011 · Replies 2 · May 8, 2011

Replies: 2

Views: 4K

High School Moment of force and the meter rule

May 4, 2011 · Replies 13 · May 8, 2011

Replies: 13

Views: 14K

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