Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Maximum weight of block m2 for which block m1 will remain at rest
  • shimizua
  • · Replies 20 ·
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Spring Compression and block of mass
  • Husker70
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5
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Speed with which m must move for M to stay at rest
  • shimizua
  • · Replies 11 ·
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11
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6K
Acceleration of a box pulled up a ramp with friction
  • M4573R
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3
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8K
Solving Newtons Cooling Law: LnT = -kt +LnC
  • xlgurulx
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1
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4K
How Do You Apply the Phasor Method to Add Sinusoidal Functions?
  • Aeighme
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1
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Calculating Volume Displaced of Block in Water & Alcohol
  • mwharrell
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2
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Adjacent Blocks: What is the mag of the force due m1 on m2?
  • raven2783
  • · Replies 8 ·
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8
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Could someone PLEASE quickly check if my work is right?
  • Lawcheehung
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1
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Pulley Mechanics: Equal Forces on Spring Scale?
  • keemosabi
  • · Replies 10 ·
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10
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10K
What is the Orbital Period of Mars in Earth Years?
  • HelloMotto
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3
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Help with problems relating to Force and Motion with Friction
  • NYbikerkid
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1
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Work to compress a gas (constant external pressure)
  • 1drdan
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1
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Get equation for velocity of a satellite
  • rcrx
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1
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Contact Forces Question(s) part 2
  • Inertialforce
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2
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Uniform circular motion on a table
  • cj3
  • · Replies 3 ·
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3
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5K
Conservation of Energy Ball Problem
  • clairez93
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1
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3K
Calculating Applied Force in an Accelerating Elevator
  • anubis01
  • · Replies 2 ·
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2
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9K
How Fast Was the Bullet Before Striking the Block?
  • ritwik06
  • · Replies 3 ·
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3
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2K
Mechanical Energy of Particle in Horizontal Circle
  • ritwik06
  • · Replies 2 ·
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2
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2K
How Does Distance Affect Electric Field Calculation Above a Charged Sheet?
  • gnarkil
  • · Replies 6 ·
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6
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5K
Window Washer Pulling on Cable: Dynamics Analysis
  • jnimagine
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1
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Solving Speed of Train on Curve of Radius 235m
  • sugarntwiligh
  • · Replies 4 ·
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4
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2K
When Do Objects Collide and Have the Same Speed?
  • jumbogala
  • · Replies 11 ·
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11
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3K
Calculating Magnitude of Vector: Solving for A & Theta
  • MarXphysics
  • · Replies 6 ·
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6
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2K
How Is the Orbital Period of a Chunk of Ice Calculated in Saturn-like Rings?
  • sugarntwiligh
  • · Replies 2 ·
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2
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6K
Pushing a Box On A Plane 30deg Plane Help?
  • raven2783
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1
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3K
Calculating Surface Charge Density
  • angryshoe
  • · Replies 1 ·
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1
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12K
Calculate Friction Coefficient with Homework Statement
  • blayman5
  • · Replies 2 ·
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2
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3K
What is the Acceleration of a Skydiver with Air Resistance?
  • shimizua
  • · Replies 3 ·
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3
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7K
Transformers and induced current
  • _Mayday_
  • · Replies 3 ·
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3
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Calculating Coefficient of Friction on Inclined Surface
  • Inertialforce
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1
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2K
Understanding Newton's Laws through an Experiment on Uniform Circular Motion
  • tornzaer
  • · Replies 3 ·
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3
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2K
Contact Forces in Three-Block System
  • Inertialforce
  • · Replies 2 ·
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2
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2K
What is the efficiency of MIT's organic solar concentrators?
  • Feldoh
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2
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2K
Rocket Lab @ Angles: Predicting Distance of Launch
  • Hellsing834
  • · Replies 5 ·
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5
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2K
Solve Your Spring Problems Now - Expert Help Available
  • dsptl
  • · Replies 14 ·
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14
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3K
How to Calculate Force of Tension and Theta?
  • temaire
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2
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3K
What Is Her Apparent Weight in a Decelerating Elevator?
  • shimizua
  • · Replies 3 ·
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3
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7K
What is the Mass of the Block in a Ballistic Pendulum Collision?
  • johndoe14
  • · Replies 4 ·
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4
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3K
What Is the Acceleration of a Towed Glider?
  • Mitchtwitchita
  • · Replies 2 ·
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2
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Newton's Third Law hot air balloon
  • Mitchtwitchita
  • · Replies 8 ·
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8
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11K
Required torque to accelerate a disk of a certain mass
  • Sum1
  • · Replies 3 ·
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3
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5K
Calculating Elevator Motor Work: 500 kg Lifted 50 m | Urgent Problem Solution
  • dsptl
  • · Replies 5 ·
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5
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2K
Measurement of g with a free falling plummet
  • bravehart
  • · Replies 4 ·
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4
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2K
Throwing a Coin: Calculating the Distance
  • pivu0
  • · Replies 9 ·
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9
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14K
Resistor Math Problem: Finding Equivalent Resistance in Series and Parallel
  • Ithryndil
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5
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Solving the Centre of Mass Shift When Ice Melts
  • ritwik06
  • · Replies 2 ·
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2
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Roulette ball trajectory (after impact)
  • Alin
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2
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7K
Magnetic Field and potential difference
  • strawberrysk8
  • · Replies 4 ·
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4
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Electromagnetism Homework Help: Gauss & Coulomb Laws for Flux Calculation
  • Kyho
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2
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Question on Newton's Second Law of Motion
  • Nivlac2425
  • · Replies 8 ·
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8
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3K
Kinetic Friction & Accelerating Crate: Unraveling the Mystery
  • healthfreak
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2
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7K
Maximum torque on an electric motor
  • Dione
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1
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How Do Current and Voltage Divide in Different Branches of a Circuit?
  • Ithryndil
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2
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Relative Motion of a hockey player
  • wallace13
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1
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Determining Maximum bending moment via shear force diagram
  • Tom McCurdy
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2
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2D Motion with a missle/engines
  • wallace13
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1
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How Long Does It Take for a Patrol Car to Catch a Speeder?
  • kinematics23
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1
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Pivoting Cylinder Homework: Find Angular Acceleration
  • gonzalo12345
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1
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3K
Need Help on an Elastic Potential Energy Problem on an incline
  • portuwhat
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1
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Elevator going down and you drop a book
  • kmiller
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1
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Help Me Understand: Homework on Tennis Ball Motion
  • whyorwhynot
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1
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Vector Addition using coordinates
  • jumbogala
  • · Replies 1 ·
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1
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3K
Conceptual Projectile Motion Question
  • wallace13
  • · Replies 1 ·
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1
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Solving Physics Problems: A & B
  • bubba640
  • · Replies 3 ·
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3
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4K
How can the impulse of a bouncing ball be calculated?
  • geo321
  • · Replies 1 ·
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1
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What is the Net Force on a Helicopter at 5 Seconds?
  • xmflea
  • · Replies 1 ·
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1
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Need Help Understanding a concept on Buoyancy
  • jason_r
  • · Replies 1 ·
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1
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Inclined Plane Inside an Elevator
  • rwx1606
  • · Replies 5 ·
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5
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Work Done by Spring Homework: -1.2J, -0.52J, -0.26J, 0.52J, 1.2J
  • Spartan Erik
  • · Replies 1 ·
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1
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2K
Find Time: Solving Kinematic Equations for Baseball Motion
  • czlu
  • · Replies 2 ·
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2
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4K
How Is Work Calculated in an Elevator Physics Problem?
  • ctpengage
  • · Replies 4 ·
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4
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3K
What Angle Causes the Fishing Line to Break with a 1.95 kg Ball?
  • finlejb
  • · Replies 5 ·
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5
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What is the acceleration of a pendulum at its maximum deflection?
  • southernbelle
  • · Replies 10 ·
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10
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Finding Position of Simple Harmonic Oscillator
  • Andrusko
  • · Replies 2 ·
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2
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3K
How Does a Charged Glass Ball Polarize a Neutral Metal Foil?
  • bcjochim07
  • · Replies 1 ·
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1
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2K
Parallel Wires: Force per Unit Length Calculation
  • Kris1120
  • · Replies 3 ·
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3
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Calculating Torque on a Circular Loop in an External Magnetic Field
  • Kris1120
  • · Replies 2 ·
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2
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9K
A ball being dropped and bouncing back up?
  • needlottahelp
  • · Replies 6 ·
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6
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7K
How Far Does the Ball Travel After the String Is Cut?
  • Lamnia
  • · Replies 3 ·
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3
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9K
Finding magnetic flux-it's all worked, just have one question
  • crh
  • · Replies 1 ·
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1
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6K
Work Done on Cart on Incline+Rest
  • Spartan Erik
  • · Replies 1 ·
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1
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Velocity, acceleration, displacement
  • rphung
  • · Replies 3 ·
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3
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4K
How High Above the Window Does the Flowerpot Go?
  • eelshaikh
  • · Replies 7 ·
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7
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How much charge will flow from the battery?
  • gillyr2
  • · Replies 4 ·
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4
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16K
Creating a Position vs. Time Graph for a Moving Car
  • swede5670
  • · Replies 12 ·
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12
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3K
What is the Tension in the 37-Degree Cable Holding a 4000kg Wrecking Ball?
  • xmflea
  • · Replies 6 ·
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6
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14K
Calculate Magnitude of Gravitational Force on One Sphere
  • sugarntwiligh
  • · Replies 5 ·
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5
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Gauss' Law - Sphere with spherical cavity
  • SilverGirl
  • · Replies 16 ·
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16
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A rock is thrown off of a cliff
  • Gustason
  • · Replies 7 ·
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7
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13K
Ideal Spring, Spring Constant, Equilibrium Length
  • Spartan Erik
  • · Replies 1 ·
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1
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21K
What Is Major Jones's Recoil Speed in Zero Gravity?
  • Spartan Erik
  • · Replies 1 ·
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1
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3K
Understanding Zero Slope in Distance & Velocity Graphs
  • Jayman
  • · Replies 2 ·
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2
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Building a car without a mousetrap i'm desperate
  • kailey
  • · Replies 4 ·
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4
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2K
How long does it take for a signal to reach a moving spaceship at 0.866c?
  • vysis
  • · Replies 5 ·
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5
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2K
Why can't a uniform electric field be described by E=\frac{kq}{r^2}?
  • temaire
  • · Replies 2 ·
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2
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1K
Is the Net Force at the Bottom of a Vertical Circle Greater or Lower Than MG?
  • HelloMotto
  • · Replies 2 ·
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2
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2K
Ratio between change in Energy(Gravitational Potential)
  • fahlim003
  • · Replies 1 ·
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1
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3K
Achieving Horizontal Motion of a Crate: A Physics Challenge
  • Melawrghk
  • · Replies 10 ·
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10
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3K