Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

A couple of angular accelaration problems

  • backseatgunner
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1

Calculating Meter Stick Weight Using Method of Moments

  • jimmyjet
  • · Replies 2 ·
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2

Finding the max length of a spring

  • DStan27
  • · Replies 3 ·
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3

Calculating Net Force and Acceleration in a System

  • rafael_josem
  • · Replies 4 ·
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4

Rotational Inertial and Torque question

  • skinnyabbey
  • · Replies 5 ·
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5

Calculating the Angular Momentum of a Moon Orbiting an Earth-like Planet

  • AdnamaLeigh
  • · Replies 4 ·
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4

Can't Derive Friction From Equation

  • interXdragon
  • · Replies 9 ·
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9

Gravitational Fields: Factors Affecting Force

  • Risaka
  • · Replies 4 ·
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4

Car on a vertical loop: why my energy calculation gives the wrong radius

  • ChaoticLlama
  • · Replies 7 ·
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7

How Far Will the Spring Compress When Dropping a 5.8 kg Block?

  • DStan27
  • · Replies 1 ·
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1

Steiner's Theorem: Moment of Inertia Around Axis

  • dx
  • · Replies 8 ·
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8

What Is the Speed of a Disk's Center of Mass After Rotational Descent?

  • skinnyabbey
  • · Replies 1 ·
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1

Rotational Motion and Moment of Inertia Questions

  • hoseA
  • · Replies 7 ·
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7

Motion and Position-Time Graphs

  • Jacobpm64
  • · Replies 1 ·
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1

Brass rod fitting through copper sheet clearance at temperature

  • kris24tf
  • · Replies 1 ·
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1
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1

How Do Collisions Affect Momentum in Physics Problems?

  • hshphyss
  • · Replies 1 ·
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1

Got a Sound Wave Question for you thinkers

  • DaMastaofFisix
  • · Replies 1 ·
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1

Force Resolving Structural Engineering Problem

  • The Gradient Guru
  • · Replies 2 ·
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2

Calculating Electric Field at 4th Corner of Rectangle with 3 Charges

  • Pseudo Statistic
  • · Replies 1 ·
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1

Some problems with rotational motion

  • jrd007
  • · Replies 5 ·
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5

Magnetic Fields affect on voltage

  • KatieKangaroo
  • · Replies 1 ·
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1

Stone thrown up at 19.6 m/s: velocity and position at 1s, 2s, 3s

  • fabbo
  • · Replies 14 ·
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14

How can you measure speed of a plane from the ground?

  • brahim
  • · Replies 1 ·
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1

Calculating the Mass of the Earth Using Orbital Data

  • NoMeGusta
  • · Replies 6 ·
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6

Calculating Power to Drag 100kg Log Down 20° Hillside at 0.50 m/s

  • NoMeGusta
  • · Replies 3 ·
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3
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2

How Do You Calculate the Rotational Inertia of a Rotating Door?

  • Nm
  • · Replies 2 ·
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2
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5

How to Calculate Energy Loss in an Inductor with Internal Resistance?

  • meadow
  • · Replies 2 ·
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2

Spring balance reading on a sinusoidal road at constant velocity

  • Doppler
  • · Replies 1 ·
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1
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2

Will All the Ice Melt in a Box with a Heat Capacity of 80J/K?

  • Izekid
  • · Replies 1 ·
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1

Conservation of angular momentum of a uniform thin rod

  • ViewtifulBeau
  • · Replies 1 ·
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1

What Is the Minimum Speed to Prevent Water Spillage in a Rotating Pail?

  • lunarskull
  • · Replies 1 ·
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1

Understanding Diode Display on a C.R.O.

  • QueenFisher
  • · Replies 9 ·
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9

Sources of Error in Standing Waves Lab

  • dekoi
  • · Replies 3 ·
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3

How Does Hubble's Law Calculate Redshift for Distant Galaxies?

  • SN1987a
  • · Replies 4 ·
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4

Angular acceleration of meter stick after removing one mass

  • Nm
  • · Replies 5 ·
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5

Find the translational kinetic energy of its center of gravity

  • AdnamaLeigh
  • · Replies 1 ·
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1

Rotational kinetic energy of cylinder rolling down 15° incline

  • brad sue
  • · Replies 1 ·
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1

How Does Angular Acceleration Affect Rotational Motion?

  • rockmorg
  • · Replies 1 ·
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1

Tug of War Acceleration: 60kg and 40kg Girls on Icy Surface

  • emma123
  • · Replies 1 ·
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1

Ball thrown from moving train observed to rise vertically from ground

  • xkamranx
  • · Replies 3 ·
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3

What is the Angular Speed of a Toy Train's Wheel in a Rotating Track System?

  • ViewtifulBeau
  • · Replies 2 ·
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2

Calculating Wind Velocity for Pilot's Flight Route

  • DB
  • · Replies 2 ·
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2

What Is the Molecular Formula of the Alkane in This Chemistry Problem?

  • daphap
  • · Replies 1 ·
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1

Finding breaking distance when force and velocity are given

  • emma123
  • · Replies 3 ·
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3

How Do You Calculate the Unknown Mass in an Atwood's Machine?

  • Quadratic
  • · Replies 1 ·
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1

Finding center of mass of a picture

  • runawayshoes
  • · Replies 5 ·
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5

Anyone see where I messed up on finding the current?

  • mr_coffee
  • · Replies 6 ·
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6

Centripetal Force Experiment: Measuring Acceleration on a Turntable

  • SN1987a
  • · Replies 2 ·
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2

What Does the "p" in "1.25p r/s2" Mean?

  • amcavoy
  • · Replies 3 ·
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3
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How would this work (electricity question)

  • JimmyRay
  • · Replies 2 ·
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2

Finding an electric field from a scalar field

  • Noone1982
  • · Replies 3 ·
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3

Drawing a free body diagram for a block pulled by a string at 45°

  • elle
  • · Replies 4 ·
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4

A simple ladder problem (equilibrium)

  • NutriGrainKiller
  • · Replies 4 ·
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4

One more problem overcoming friction

  • tenchick19
  • · Replies 1 ·
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1

How do I interpret magnetic fields due to electric currents?

  • mr_coffee
  • · Replies 3 ·
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3

How far does the marble travel before hitting the floor?

  • F.B
  • · Replies 3 ·
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3

What is the fraction of a rope that can hang over a table without sliding?

  • courtrigrad
  • · Replies 4 ·
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4

Coursework on Properties of Aluminium

  • tomfitzyuk
  • · Replies 1 ·
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1

What is the acceleration of the wedge on a slope with a block on top?

  • Pixter
  • · Replies 2 ·
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2

Conservation of Energy, Centre of Mass and Linear Momentum

  • Pioneer
  • · Replies 7 ·
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7

Calculate the work done to locate a 150kg satellite

  • UnD
  • · Replies 3 ·
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3

RMS to Peak Conversion: Magnetic Field Experiment

  • spacetime
  • · Replies 2 ·
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2

What Causes Potato Chip Bags to Burst in the Mountains?

  • touqra
  • · Replies 11 ·
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11

Racing car with lift and downforce forces

  • puregoodboi
  • · Replies 1 ·
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1

What does "Work done on the object" mean

  • duoheer
  • · Replies 1 ·
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1

Heat - Energy Transfer Question

  • Ve3Mike
  • · Replies 1 ·
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1
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3

Standing Waves in Research Industry

  • dekoi
  • · Replies 1 ·
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1

Helium balloon lifting capacity with 7.35 m radius and 930 kg balloon

  • confusedbyphysics
  • · Replies 2 ·
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2

MI moment of inertia on pulley

  • tubworld
  • · Replies 2 ·
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2

How Does Light Intensity Change Through Three Stacked Polarizing Films?

  • chaosprimer
  • · Replies 1 ·
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1

How do you prove the force between two conductor plates is F=q^2/2eA?

  • brentd49
  • · Replies 5 ·
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5

Physics problems requiring calculus and integration to solve

  • SpeeDFX
  • · Replies 2 ·
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2

What is buoyancy and how is it used in problem-solving?

  • pushpa
  • · Replies 1 ·
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1

Angular acceleration of particles on a rod and tensions in a disk pulley system

  • Shadow Cloud
  • · Replies 7 ·
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7

Does a Suspended Baseball Bat Really Function as a Simple Pendulum?

  • Cougar1112
  • · Replies 2 ·
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2

Solving Oscillation Problem: Find Time for Pendulum with 30m Cable

  • Cougar1112
  • · Replies 2 ·
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2

Solving Elevator Accleration Problems with a Bathroom Scale

  • sunshine9489
  • · Replies 4 ·
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4

Maximum velocity on a banked curve with friction

  • celticsthree4
  • · Replies 5 ·
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5

If the polar ice caps melted, would a day be longer or shorter?

  • confusedbyphysics
  • · Replies 8 ·
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8

Finding the weight of each boy on a seesaw with torque

  • Equilibrium
  • · Replies 20 ·
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20

Rotational Dynamics - sphere,block,pulley

  • nyyfan0729
  • · Replies 1 ·
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1

Temperature and frequency in an organ pipe

  • erik-the-red
  • · Replies 4 ·
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4

Light energy produced by a 60W bulb over 10 hours

  • RMHAZARD
  • · Replies 6 ·
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6

Find Velocity of Centripetal Ball Before Swing Out

  • PrudensOptimus
  • · Replies 10 ·
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10

Calculate the Overall Velocity of Dropped Hamper from 3000m Height

  • snowbelle
  • · Replies 4 ·
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4

AC circuits and Kirchoff's laws

  • koroljov
  • · Replies 1 ·
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1

How Many Freon Cycles to Lower Refrigerator Air by 12°C?

  • christodoulou Andrea
  • · Replies 3 ·
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3

What Amplitude Ensures a Computer Withstands 32g in Simple Harmonic Motion?

  • kpangrace
  • · Replies 2 ·
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2

Proving properties of a quadrilateral using vectors

  • forevergone
  • · Replies 9 ·
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9

Finding momentum of a 0.19 kg ball of dough at half its maximum height

  • hshphyss
  • · Replies 18 ·
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18

Vector Proofs: A Quadrilateral thing #2

  • forevergone
  • · Replies 2 ·
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2

Inductance of a coil in an AC L-R circuit

  • ToxicBug
  • · Replies 4 ·
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4

How is Work Calculated When Walking Up a Hill?

  • Atilla1982
  • · Replies 7 ·
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7

Paper boy problem (relative motion)

  • DB
  • · Replies 8 ·
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8