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Why Do Torques Use a Negative Sign in Inverted Pendulum Equations?
Jan 16, 2011
Replies
4
Views
3K
Conservation of energy question
Jan 15, 2011
Replies
2
Views
2K
Is the Formula P = Depth * 0.1 Accurate for Determining Water Pressure
Jan 15, 2011
Replies
5
Views
4K
Newton's 4th Law: Unpacking Gravitational Force
Jan 15, 2011
Replies
2
Views
36K
Is acceleration absolute and velocity not?
Jan 15, 2011
2
Replies
60
Views
15K
Wind/Solar/Kinetic From Breaks?
Jan 15, 2011
Replies
4
Views
2K
How do I calculate torque on a shaft with a 500 lb wheel?
Jan 15, 2011
Replies
4
Views
7K
Adiabatic Process and the speed of sound
Jan 15, 2011
Replies
4
Views
15K
Why does the Earth rotate around the sun?
Jan 15, 2011
2
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45
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20K
Velocity/position from variable input force
Jan 14, 2011
Replies
1
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2K
Simple Question on Earth Rotation involving Newton III
Jan 14, 2011
Replies
4
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2K
Solve Centripetal Force Equation for Pivot Point
Jan 13, 2011
Replies
5
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3K
To find mass of falling object
Jan 13, 2011
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5
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10K
Lagrangian density of linear elastic solid
Jan 13, 2011
Replies
1
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3K
Function to minimize time to go from A to B with limited acceleration
Jan 13, 2011
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8
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4K
What is the effect of gravity on a thrown stone?
Jan 13, 2011
Replies
2
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7K
Why are 4 different thermodynamical potential?
Jan 13, 2011
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13
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4K
An impractical bridge, but would it work?
Jan 13, 2011
Replies
4
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2K
What is the role of the Lorentz force in an electric motor?
Jan 12, 2011
Replies
2
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3K
Origins of Coefficient of Friction and Normal Force
Jan 12, 2011
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4
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3K
Simulating linear acceleration of a vehicle
Jan 12, 2011
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1
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3K
Behavior of particles in water
Jan 12, 2011
Replies
6
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3K
Exploring the Physics of Space Travel: Joules and Beyond
Jan 12, 2011
Replies
6
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4K
Fluid Mechanics - Air Pressure/ Prism
Jan 12, 2011
Replies
1
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4K
Evaporating water at 40 Celcius
Jan 12, 2011
Replies
14
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10K
Equivalent spring constant of rigid bodies
Jan 12, 2011
Replies
1
Views
4K
Uniformly Accelerated Motion(related to direction)
Jan 12, 2011
Replies
16
Views
13K
How Do You Calculate Acceleration During Variable Rotational Speed?
Jan 11, 2011
Replies
25
Views
8K
VB app to calculate velocity of a golf club head
Jan 11, 2011
Replies
5
Views
3K
A basic question from screw jack coefficient of friction
Jan 11, 2011
Replies
1
Views
3K
What is the Meaning of Weight for a Freely Falling Body?
Jan 11, 2011
Replies
22
Views
6K
Impact of a Porsche 911 hitting a standing pedestrian
Jan 10, 2011
Replies
7
Views
148K
Can speed be a imaginary number validity of work energy theoram in 1D
Jan 10, 2011
Replies
4
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2K
What is the minimum speed for waterskiing based on body mass?
Jan 10, 2011
Replies
16
Views
16K
How to convert accelerometer data to metabolic equivalents(METS)?
Jan 9, 2011
Replies
4
Views
4K
What Factors Affect the Height of Water Splashes?
Jan 9, 2011
Replies
4
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4K
Acceleration without resultant force (rotating body)
Jan 9, 2011
Replies
7
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3K
Why can't phase space trajectories intersect?
Jan 9, 2011
Replies
1
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4K
Designing a Self-Draining Boat: How to Determine Waterline and Deck Height?
Jan 9, 2011
Replies
2
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2K
What Stops a Falling Rock at the Atomic Level?
Jan 9, 2011
Replies
4
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2K
How Does Hooke's Law Help Calculate Spring Length for Weight Drops?
Jan 8, 2011
Replies
1
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4K
Exploring Escape Velocity and Forces
Jan 8, 2011
Replies
6
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3K
Why is it faster to boil water with the lid on
Jan 8, 2011
Replies
1
Views
6K
Tidal flexing and conservation of energy
Jan 8, 2011
Replies
6
Views
8K
First-Order Principles of Classical Mechanics
Jan 8, 2011
Replies
2
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4K
Time as an illusion that arises from motion.
Jan 8, 2011
Replies
18
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5K
Definition of elastic collision
Jan 8, 2011
Replies
19
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10K
What is Feynman's Definition of Perpetual Motion?
Jan 7, 2011
Replies
4
Views
7K
Rotating a vector about a new origin
Jan 6, 2011
Replies
6
Views
3K
What causes the centripetal acceleration of the earth?
Jan 6, 2011
Replies
4
Views
11K
Mean power in driven, damped harmonic oscillators
Jan 6, 2011
Replies
2
Views
3K
Angular velocity and external forces
Jan 6, 2011
Replies
4
Views
2K
Whats is the different between kienetic energy and momentum
Jan 5, 2011
Replies
9
Views
2K
The Relationship Between Newtons and Joules
Jan 5, 2011
Replies
11
Views
6K
Attempting to reduce the speed of sound on a plane/plank
Jan 5, 2011
Replies
4
Views
2K
Converting kN to Bar: An Explanation and Guide
Jan 5, 2011
Replies
4
Views
4K
Are there any Cons in using rotational speed of Earth for Rockets?
Jan 5, 2011
Replies
13
Views
3K
Cooling of water vapor - air mixture to T < 273K
Jan 4, 2011
Replies
1
Views
3K
Deriving Relation between Angular & Translational Velocities in Circular Motion
Jan 4, 2011
Replies
6
Views
10K
Inertial Propulsion: The Potential of Eliminating Electron Mass in Graphene
Jan 4, 2011
Replies
33
Views
8K
What is the difference between conserved momentum and potential energy?
Jan 4, 2011
Replies
15
Views
3K
Is Time's Speed Constant for Everyone?
Jan 4, 2011
Replies
14
Views
3K
Confused by wikipedia on (torque-free) precession
Jan 3, 2011
Replies
2
Views
3K
Exploring Time Travel with Objects' States
Jan 3, 2011
Replies
7
Views
2K
Impulsive Motion: Solving the Riddle
Jan 3, 2011
Replies
1
Views
4K
Confusion about the nature of torque.
Jan 3, 2011
Replies
4
Views
2K
CO2 pressure, consumption, and bubble counters
Jan 3, 2011
Replies
6
Views
8K
Collision between two moving objects (one with a non-known trajectory)?
Jan 3, 2011
Replies
1
Views
3K
Solve for dimensions of rectangular prism given inertia
Jan 3, 2011
Replies
4
Views
7K
Centripetal force in a semicircle
Jan 3, 2011
Replies
2
Views
3K
Correlation between a car's horsepower and maximum strength of Cable
Jan 2, 2011
Replies
9
Views
3K
Power Consumption Calculation Verification
Jan 2, 2011
2
Replies
40
Views
6K
Action and equations of motion
Jan 2, 2011
Replies
5
Views
3K
Centripetal force in a curved road
Jan 2, 2011
Replies
19
Views
5K
Marble experiment (referring to momentum)?
Jan 2, 2011
Replies
2
Views
3K
Static Friction & Friction Coefficient | fsN
Jan 2, 2011
Replies
8
Views
2K
Relationship between acceleration and distance
Jan 2, 2011
Replies
12
Views
9K
Sound waves speed and intensity on wood,metal and cement
Jan 1, 2011
Replies
6
Views
8K
Head-on Collision Damage: Comparing 50mph and 100mph Impact Damage
Jan 1, 2011
Replies
2
Views
4K
Can Pressure Be Less Than 1 atm in a Grounded Container on Earth?
Jan 1, 2011
Replies
6
Views
6K
Fluid mechanics suction question
Dec 31, 2010
Replies
4
Views
9K
Can Joules Be Converted to Newtons in Energy Calculations?
Dec 31, 2010
Replies
5
Views
24K
Coriolis Effect on Projectiles
Dec 31, 2010
Replies
17
Views
12K
What Causes the Centripetal Acceleration in Circular Motion?
Dec 30, 2010
Replies
7
Views
3K
Can a Helicopter Fuselage Exhibit Pendulum Behavior?
Dec 29, 2010
Replies
25
Views
9K
What is with the law of conservation of momentum?
Dec 29, 2010
Replies
6
Views
2K
How did Ludwig Boltzmann develop the Boltzmann distribution and define entropy?
Dec 29, 2010
Replies
2
Views
2K
Oscillation in quadratic potential
Dec 29, 2010
Replies
10
Views
5K
Air flow in relation to water depth
Dec 29, 2010
Replies
2
Views
5K
How fundamental is Law of Conservation of Energy?
Dec 29, 2010
Replies
19
Views
5K
The formula for force, for something deceleration.
Dec 29, 2010
Replies
4
Views
4K
Pedal Angular Velocity: Pi/2*f or 2pi*f?
Dec 29, 2010
Replies
6
Views
3K
Build a Vortex Air Ring Shooter with 32 Gallon Bin
Dec 28, 2010
Replies
1
Views
3K
So, what happens to the energy of a bouncing ball in a vacuum?
Dec 28, 2010
Replies
1
Views
2K
Derviation of Moment of inertia
Dec 28, 2010
Replies
6
Views
2K
Punch, kicks, collisions in athletic contests
Dec 28, 2010
Replies
7
Views
2K
If there is a maximum velocity, c, is there a maximum kinetic energy?
Dec 27, 2010
Replies
19
Views
4K
Calculating car tyre forces - slip ratio
Dec 27, 2010
Replies
1
Views
7K
Friction depends upon area or not?
Dec 27, 2010
Replies
4
Views
30K
What is the Concept of Centrifugal Force and Who Introduced it?
Dec 27, 2010
Replies
17
Views
5K
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