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Undergrad What Forces Are Behind the Resistance of Rubber Bands?

Jan 23, 2004 · Replies 2 · Jan 23, 2004

Replies: 2

Views: 7K

Undergrad Calculating Impulse and Force: Can I Determine Collision Forces?

Jan 22, 2004 · Replies 6 · Jan 23, 2004

Replies: 6

Views: 3K

High School How do you make a hand powered AC generator?

Jan 22, 2004 · Replies 2 · Jan 23, 2004

Replies: 2

Views: 11K

High School Downward acceleration greater than G concept

Jan 21, 2004 · Replies 10 · Jan 22, 2004

Replies: 10

Views: 18K

Undergrad Coherence of Sound Waves: Myth or Reality?

Jan 19, 2004 · Replies 2 · Jan 21, 2004

Replies: 2

Views: 2K

High School Mass and weight differences on earth

Jan 21, 2004 · Replies 3 · Jan 21, 2004

Replies: 3

Views: 9K

Undergrad Horse and Lance Momentum and Energy

Jan 13, 2004 · Replies 4 · Jan 21, 2004

Replies: 4

Views: 7K

Undergrad Force required to slash through chain or steel mail

Jan 20, 2004 · Replies 3 · Jan 21, 2004

Replies: 3

Views: 4K

Undergrad Moment of inertia for a rectangular plate

Jan 19, 2004 · Replies 3 · Jan 21, 2004

Replies: 3

Views: 59K

High School Force vs Weight: Which is Heavier?

Jan 12, 2004 · Replies 7 · Jan 21, 2004

Replies: 7

Views: 10K

Undergrad Troubleshooting a Faulty 3 Phase Motor

Jan 19, 2004 · Replies 2 · Jan 21, 2004

Replies: 2

Views: 3K

High School Can Perpetual Motion Transform Our Future?

Jan 17, 2004 · Replies 49 · Jan 20, 2004

2

Replies: 49

Views: 7K

High School Understanding the Equation F=ma: Is Acceleration or Velocity More Important?

Jan 19, 2004 · Replies 12 · Jan 20, 2004

Replies: 12

Views: 2K

High School Is Momentum Always Conserved in Physics?

Jan 17, 2004 · Replies 20 · Jan 20, 2004

Replies: 20

Views: 5K

Undergrad Power and Velocity: Can You Help Me Understand Better?

Dec 31, 2003 · Replies 8 · Jan 20, 2004

Replies: 8

Views: 3K

Undergrad Mysterious Water Freezes Instantly in Cold Climate

Jan 16, 2004 · Replies 2 · Jan 19, 2004

Replies: 2

Views: 3K

High School I'm have such a hard time with tension

Jan 18, 2004 · Replies 1 · Jan 19, 2004

Replies: 1

Views: 2K

Undergrad What Happens to the Force at Gear Gang Limit?

Jan 11, 2004 · Replies 3 · Jan 19, 2004

Replies: 3

Views: 4K

Graduate The power of the transfinite system

Jan 13, 2004 · Replies 80 · Jan 19, 2004

3

Replies: 80

Views: 9K

Undergrad Torque: Why Force x Lever Arm?

Jan 11, 2004 · Replies 8 · Jan 19, 2004

Replies: 8

Views: 4K

Graduate It's not potential energy but energy potential->

Jan 17, 2004 · Replies 1 · Jan 17, 2004

Replies: 1

Views: 2K

Can Sound Waves Travel Through Space and Time?

Jan 16, 2004 · Replies 6 · Jan 17, 2004

Replies: 6

Views: 2K

Undergrad Initial velocity required depend on the mass of projectile

Jan 17, 2004 · Replies 2 · Jan 17, 2004

Replies: 2

Views: 3K

Graduate Modern Physics Experiments in Newton's Time: A Look Back in Time

Jan 14, 2004 · Replies 4 · Jan 16, 2004

Replies: 4

Views: 3K

Graduate Conflict between Quantum Mechanics and Relativity

Dec 10, 2003 · Replies 17 · Jan 16, 2004

Replies: 17

Views: 12K

High School Quick q, what does g forces of 3 - 3 ? mean? 3?

Jan 14, 2004 · Replies 6 · Jan 15, 2004

Replies: 6

Views: 2K

Undergrad Help : isolated system-conservation of mechnaical energy

Jan 15, 2004 · Replies 1 · Jan 15, 2004

Replies: 1

Views: 3K

Graduate Potential energy mass equivalency

Jan 11, 2004 · Replies 12 · Jan 15, 2004

Replies: 12

Views: 4K

Graduate Semi-Subsistant Gyroscope Torque

Oct 22, 2003 · Replies 13 · Jan 14, 2004

Replies: 13

Views: 4K

Undergrad Finding acceleration from position data with no knowledge of integrals?

Jan 13, 2004 · Replies 5 · Jan 14, 2004

Replies: 5

Views: 9K

Graduate Can the energy of movement be altered by another energy?

Nov 10, 2003 · Replies 34 · Jan 14, 2004

2

Replies: 34

Views: 8K

Undergrad Car Acceleration: Gears, Gear Ratio, & More

Jan 9, 2004 · Replies 18 · Jan 14, 2004

Replies: 18

Views: 8K

High School Calculating Force for Mop with 5 ft Pole

Jan 11, 2004 · Replies 4 · Jan 11, 2004

Replies: 4

Views: 3K

Graduate Solar power bases will be built on the Moon

Nov 7, 2003 · Replies 9 · Jan 11, 2004

Replies: 9

Views: 3K

Graduate Anyone ever heard of Autodynamics

Jan 4, 2004 · Replies 6 · Jan 10, 2004

Replies: 6

Views: 4K

High School Bus From El Paso to Chihuahua: Total Displacement

Jan 9, 2004 · Replies 1 · Jan 9, 2004

Replies: 1

Views: 2K

Undergrad Solving 2D Velocity at Point P on a Rigid Body - HELP ME!

Jan 8, 2004 · Replies 2 · Jan 9, 2004

Replies: 2

Views: 2K

High School Where Does a Man Land When Jumping Inside a Moving Train?

Jan 9, 2004 · Replies 4 · Jan 9, 2004

Replies: 4

Views: 3K

High School Angular Momentum: Explained | A Guide for Beginners

Jan 9, 2004 · Replies 1 · Jan 9, 2004

Replies: 1

Views: 2K

High School Which of These Statements Are True?

Jan 8, 2004 · Replies 3 · Jan 9, 2004

Replies: 3

Views: 3K

Undergrad What's the acceleration when it contacts the floor?

Jan 8, 2004 · Replies 2 · Jan 8, 2004

Replies: 2

Views: 2K

Undergrad Torque, Force, and a truck cover

Dec 23, 2003 · Replies 24 · Jan 8, 2004

Replies: 24

Views: 13K

Undergrad Bernoulli's equation and conservation of energy

Jan 6, 2004 · Replies 4 · Jan 7, 2004

Replies: 4

Views: 5K

Undergrad Buoyancy Puzzler - just for fun

Dec 24, 2003 · Replies 9 · Jan 7, 2004

Replies: 9

Views: 5K

Undergrad Forces involved in making a car airborne

Jan 7, 2004 · Replies 1 · Jan 7, 2004

Replies: 1

Views: 7K

Graduate Gravity and the Quantum Vacuum (with general carp)

Jan 6, 2004 · Replies 4 · Jan 7, 2004

Replies: 4

Views: 4K

Undergrad Generate AC/DC w/o Contact Brushes: Is It Possible?

Dec 27, 2003 · Replies 3 · Jan 7, 2004

Replies: 3

Views: 3K

High School Horizontal velocity experiment

Jan 1, 2004 · Replies 4 · Jan 6, 2004

Replies: 4

Views: 3K

Undergrad Angle of Balance with Unequal Weights: Equation?

Jan 2, 2004 · Replies 10 · Jan 5, 2004

Replies: 10

Views: 7K

Undergrad Rotational Motion Clarification

Jan 4, 2004 · Replies 3 · Jan 5, 2004

Replies: 3

Views: 2K

Undergrad Mechanical Equilibrium: Rotating w/No Net Torque

Jan 5, 2004 · Replies 3 · Jan 5, 2004

Replies: 3

Views: 11K

Undergrad Sizing a mototr to the right torque

Jan 4, 2004 · Replies 1 · Jan 5, 2004

Replies: 1

Views: 2K

Undergrad Regarding the direction of the angular velocity vector

Jan 4, 2004 · Replies 6 · Jan 5, 2004

Replies: 6

Views: 14K

High School How Much Weight Does Spray Paint Add to a Paper Rocket?

Jan 3, 2004 · Replies 3 · Jan 4, 2004

Replies: 3

Views: 6K

Undergrad A very quick query about strain gauges

Jan 3, 2004 · Replies 1 · Jan 4, 2004

Replies: 1

Views: 3K

Undergrad What is the solution to the classical string problem?

Jan 3, 2004 · Replies 3 · Jan 3, 2004

Replies: 3

Views: 3K

High School Perpetual Motion - A Magnetic Machine for Endless Energy?

Dec 26, 2003 · Replies 26 · Jan 3, 2004

Replies: 26

Views: 9K

Graduate Understanding the Coefficient of Restitution in 2-D Inelastic Collisions

Jan 2, 2004 · Replies 1 · Jan 3, 2004

Replies: 1

Views: 4K

Undergrad Calculating Final Position of Billiard Ball with Rolling Friction

Jan 2, 2004 · Replies 1 · Jan 3, 2004

Replies: 1

Views: 4K

Undergrad Helping You Solve Cambridge's Exam Question

Jan 2, 2004 · Replies 9 · Jan 2, 2004

Replies: 9

Views: 4K

Undergrad Can You Calculate the Distance Sound Travels Based on Intensity?

Jan 2, 2004 · Replies 1 · Jan 2, 2004

Replies: 1

Views: 2K

High School Can an Object in Motion Remain Moving with Balanced Forces?

Jan 2, 2004 · Replies 1 · Jan 2, 2004

Replies: 1

Views: 4K

Undergrad Extra credit problems dealing with projectiles

Jan 1, 2004 · Replies 1 · Jan 1, 2004

Replies: 1

Views: 2K

Undergrad What is the angular momentum of a spinning solid sphere

Dec 27, 2003 · Replies 11 · Jan 1, 2004

Replies: 11

Views: 23K

Who Cares About Time Travel When

Dec 30, 2003 · Replies 1 · Dec 31, 2003

Replies: 1

Views: 2K

Undergrad Is the NHTSA's Method for Testing Frontal Collisions Accurate?

Dec 31, 2003 · Replies 2 · Dec 31, 2003

Replies: 2

Views: 3K

High School Is the centrifugal force fictitious or just incidental?

Dec 28, 2003 · Replies 14 · Dec 31, 2003

Replies: 14

Views: 6K

Undergrad A massless, frictionless pulley is suspended from a rigid rod

Dec 31, 2003 · Replies 2 · Dec 31, 2003

Replies: 2

Views: 4K

Undergrad Solving Newton's Gravity Equation: Acceleration & Masses

Dec 27, 2003 · Replies 12 · Dec 29, 2003

Replies: 12

Views: 6K

Undergrad New Forum for Analytical Mechanics?

Dec 29, 2003 · Replies 1 · Dec 29, 2003

Replies: 1

Views: 3K

Graduate Solving the Superball Physics Problem: Bouncing in a Parabolic Path

Dec 26, 2003 · Replies 5 · Dec 29, 2003

Replies: 5

Views: 6K

Undergrad Potential energy of solids in tension question

Dec 29, 2003 · Replies 1 · Dec 29, 2003

Replies: 1

Views: 3K

Undergrad Would a Body at the Center of the Earth Have Weight?

Dec 27, 2003 · Replies 12 · Dec 28, 2003

Replies: 12

Views: 4K

Undergrad Bicycle Tire Question: Why Does Air Loss Affect Cycling Difficulty?

Dec 24, 2003 · Replies 9 · Dec 27, 2003

Replies: 9

Views: 5K

High School Energy Transferred When Punching - How Much Force?

Dec 25, 2003 · Replies 1 · Dec 26, 2003

Replies: 1

Views: 9K

Graduate So, what is the law governing perpetual motion?

Nov 17, 2003 · Replies 27 · Dec 26, 2003

Replies: 27

Views: 13K

High School Describe the final position of the weights

Dec 25, 2003 · Replies 3 · Dec 26, 2003

Replies: 3

Views: 2K

Graduate Godel's rotating universe theory

May 15, 2003 · Replies 4 · Dec 25, 2003

Replies: 4

Views: 12K

Undergrad How Does a Black Box Simplify Calculating Rope Tension in Pulley Systems?

Dec 24, 2003 · Replies 2 · Dec 25, 2003

Replies: 2

Views: 3K

Undergrad How well will my couch be rumbled?

Dec 24, 2003 · Replies 1 · Dec 24, 2003

Replies: 1

Views: 2K

Graduate How Do OS and NS Drumming Techniques Differ in Terms of Physics?

Dec 22, 2003 · Replies 7 · Dec 24, 2003

Replies: 7

Views: 7K

High School Potential Energy = Kinetic Energy

Dec 23, 2003 · Replies 5 · Dec 23, 2003

Replies: 5

Views: 50K

Graduate What is the role of wavefront in high explosives?

Dec 23, 2003 · Replies 1 · Dec 23, 2003

Replies: 1

Views: 10K

High School Physics teacher wanted me to understand how to derive

Dec 19, 2003 · Replies 12 · Dec 21, 2003

Replies: 12

Views: 5K

Graduate Finding the Center of Mass of a Uniform Semicircular Disk Using Integration

Dec 17, 2003 · Replies 8 · Dec 21, 2003

Replies: 8

Views: 15K

Undergrad Fireing projectile from north pole to equator

Dec 20, 2003 · Replies 2 · Dec 21, 2003

Replies: 2

Views: 6K

Graduate Delayed Reaction: Balancing Pressure for 277 Hours

Dec 19, 2003 · Replies 1 · Dec 20, 2003

Replies: 1

Views: 2K

Undergrad General (inaccurate) Kinetics Simulation

Dec 9, 2003 · Replies 3 · Dec 20, 2003

Replies: 3

Views: 3K

Undergrad Does the elevator speed going up effect the free fall time?

Dec 11, 2003 · Replies 6 · Dec 19, 2003

Replies: 6

Views: 4K

Undergrad Physics Concepts - Understand & Learn with Examples

Dec 19, 2003 · Replies 1 · Dec 19, 2003

Replies: 1

Views: 4K

Graduate How Do Lever Rules and Newton's Laws Explain Forces in Physics?

Dec 16, 2003 · Replies 2 · Dec 19, 2003

Replies: 2

Views: 3K

Undergrad Newton's Cradle: Speed of Force Q&A

Dec 18, 2003 · Replies 2 · Dec 19, 2003

Replies: 2

Views: 3K

Graduate Do These Equations Represent Different Forms of Kinetic Energy?

Dec 16, 2003 · Replies 19 · Dec 18, 2003

Replies: 19

Views: 4K

Graduate An effort to solve Zeno's motion Paradoxes

Dec 17, 2003 · Replies 1 · Dec 17, 2003

Replies: 1

Views: 3K

Undergrad Torque vs Force: What's the Difference?

Dec 17, 2003 · Replies 1 · Dec 17, 2003

Replies: 1

Views: 3K

Undergrad Help with Circular Motion Homework: Find Gravitation Force Point

Dec 17, 2003 · Replies 3 · Dec 17, 2003

Replies: 3

Views: 2K

Undergrad Fluid dynamics of container of gas

Dec 17, 2003 · Replies 2 · Dec 17, 2003

Replies: 2

Views: 3K

High School What is the Definition of the SI Unit of Force?

Dec 16, 2003 · Replies 3 · Dec 16, 2003

Replies: 3

Views: 3K

High School Experiment: Balloons & Pressure | Horizontal Displacement

Dec 16, 2003 · Replies 2 · Dec 16, 2003

Replies: 2

Views: 3K

Undergrad 2nd principle of termoDynamics

Dec 14, 2003 · Replies 6 · Dec 16, 2003

Replies: 6

Views: 4K

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