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.
Conservation of Momentum and KE (bullet through a pop can)
  • CaptainSFS
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2
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3K
Angular Magnification of Microscope
  • LeeLoo
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1
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7K
Calculating Force to Propel Boat Across Shallow Lake
  • ^Kris
  • · Replies 9 ·
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9
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7K
Calculate the work done by friction of package
  • veronicak5678
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2
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18K
Rotational motion of a computer hard disk
  • sktgurl930
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4
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7K
Finding Tension in a String Holding a Meter Stick Against a Wall
  • proace360
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5
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5K
Where does gravitation of earth and sun cancel
  • robvba
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7
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7K
Statics: Equilibrium and circular lawn roller
  • TranceMaster
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1
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Finding the diameter of a coil.
  • cds5615
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5
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11K
How to Determine the Masses of Objects from an Acceleration vs. Force Graph?
  • ScullyX51
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1
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26K
Block Projected up Plane with Spring atop
  • PatrickR.
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2
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How Do Final Speeds of Two Balls Compare When Thrown from a Building?
  • aquapod17
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1
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2K
Determining Velocity and Acceleration for a Moving Particle
  • ritwik06
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1
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1K
Find the magnitude of the speed
  • ScullyX51
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2
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7K
How can I find the angle between the 3d vector & x-axis ?
  • @ADAMS@
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3
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12K
The coefficient of sliding friction from a static start.
  • damianov
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2
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3K
Remote Control Overhanging Table
  • proace360
  • · Replies 3 ·
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3
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7K
Finding Velocity on a Circular Amusement Park Ride
  • joeth04
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2
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3K
Momentum of Astronaut Throwing Apples in Space
  • edowuks
  • · Replies 3 ·
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3
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3K
Solve MATLAB Question: Plot Normal Distribution on Histogram
  • coffeem
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3
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2K
2D Projectile Motion - Minimum Speed
  • stickyriceyum
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1
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6K
Work on Block with an opposing force
  • Ltcellis
  • · Replies 3 ·
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3
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9K
Finding the frequency of a subatomic particle in motion?
  • Loaded
  • · Replies 3 ·
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3
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4K
Tension on a rope with significant mass
  • RafaFutbol
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1
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14K
Diffraction grating wavelength problem
  • bcjochim07
  • · Replies 10 ·
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10
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12K
Atwood's Machine- Calc Based & Differentials
  • bollocks748
  • · Replies 1 ·
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1
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3K
Calculating Decay Rates of a Nucleus with 2 Channels
  • anizet
  • · Replies 9 ·
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9
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3K
Free-body diagram for an electron orbitting a proton.
  • seanboy
  • · Replies 7 ·
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7
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8K
Maximum and minimum values of a force to keep a block pinned.
  • DocZaius
  • · Replies 6 ·
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6
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7K
Solving for Horizontal Distance and Time in a Vertical Drop Problem
  • chanv1
  • · Replies 7 ·
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7
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6K
Net force, force diagrams, normal force
  • ctpengage
  • · Replies 6 ·
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6
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11K
One more quick convervation of energy problem
  • crimsonn
  • · Replies 1 ·
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1
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3K
Rotational Inertia of Solid Disk
  • Kickbladesama
  • · Replies 1 ·
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1
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9K
Efficiently Solving a Simple Pulley Question with Mass and Force Calculations
  • I_LuV_FiZiX
  • · Replies 3 ·
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3
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3K
Circular Motion Without Gravity- Calc Based
  • bollocks748
  • · Replies 3 ·
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3
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3K
Energy conservation with a projectile -
  • pinkerpikachu
  • · Replies 1 ·
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1
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8K
Determine the tangential and radial acceleration of the car
  • kblue!1
  • · Replies 4 ·
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4
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11K
Conical Pendulum: Mass, Speed, Frequency & Trajectory Explained
  • crhscoog
  • · Replies 1 ·
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1
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6K
Calculating the Maximum Displacement of Kate's Bungee Jump
  • cj3
  • · Replies 1 ·
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1
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4K
Work Done on Jet by Engines & Catapult during Launch
  • Symstar
  • · Replies 2 ·
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2
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15K
Force vs Time Collision: Find Speed of 66-g Tennis Ball
  • bkhofmann
  • · Replies 5 ·
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5
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3K
Solve Problem with Density: Find Object's Density
  • yoleven
  • · Replies 3 ·
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3
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2K
Calculating Time to Overtake a Satellite in Orbit
  • Symstar
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2
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6K
How Fast Does a 2100kg Block Travel After 3900J of Work?
  • xregina12
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5
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2K
Mass Spectrometry Homework: Determining Atomic Mass
  • azhoops
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2
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2K
Finding Force via Static Friction
  • xthursday
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2
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20K
Thermodynamics (heat loss problem)
  • snowsquirrel1
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1
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9K
Calculating Gravitational Force with Universal Gravitation Formula
  • uno
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2
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1K
How Long to Overtake at Different Speeds?
  • meredith
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1
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2K
Gravitation - Satellite in circular orbit
  • atavistic
  • · Replies 3 ·
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3
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Conceptual question: light bulbs in simple DC circuits
  • apocrypha
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2
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4K
Acceleration and tension for two blocks connected to frictionless pulley
  • lil2ishaq
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3
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16K
Find Capacitance From Charged Capacitors
  • McCoy13
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2
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What Initial Height Ensures a Block's Force Equals Its Weight at the Loop's Top?
  • diablo2121
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1
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Finding average speed given two velocities, help
  • steph35
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1
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Bernoulli's equation limitations?
  • madchemist
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8
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7K
Elevator Acceleration Calculations
  • physics111
  • · Replies 4 ·
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4
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4K
Solving Free Falling Objects Problem
  • steph35
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1
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Rope, tension and Newtons third law
  • DakE_FeatH
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6
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14K
Needed Power Output on an Incline
  • akfortyseven
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2
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Pushing a Lawnmower: Find tanθ_critical
  • phthiriasis
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2
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Finding magnitude of displacement vector
  • ilovedeathcab
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1
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31K
Calculating Force in a Rifle-Bullet System
  • *intheclouds*
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2
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8K
Standing wave velocity/acceleration
  • Shlllink
  • · Replies 2 ·
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2
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24K
Calculating Ramp Angle for Box Sliding - Force & Motion
  • dubversion11
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1
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3K
What Force Does the Right Block Apply to the Left Block?
  • zoner7
  • · Replies 5 ·
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5
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7K
Question About A Simple Formula
  • getfirefox
  • · Replies 1 ·
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1
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2K
Finding the Speed of a Falling Elevator with a Spring and Frictional Force
  • big_easy7
  • · Replies 15 ·
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15
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32K
Solving for Cart Work, Speed & Friction - 10kg Cart
  • needhelp4rmu
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5
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3K
Help with a potential energy question
  • xregina12
  • · Replies 5 ·
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5
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2K
Finding magnitude & direction in equillibrium
  • haleyscavone
  • · Replies 2 ·
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2
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5K
Can someone please explain to me what Performance Factor is?
  • benedictes
  • · Replies 2 ·
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2
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3K
Traveling to Another Galaxy: Can You Get There Alive?
  • esb08
  • · Replies 4 ·
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4
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3K
Force problem involving two pulleys and three masses
  • humbucker740
  • · Replies 1 ·
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1
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5K
Conservation of Energy roller-coaster car
  • maniacp08
  • · Replies 3 ·
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3
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Frequency on Waves and Tension Quick Question
  • isisfierce
  • · Replies 4 ·
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4
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9K
Football Problem: Calculating Ball's Clearance over Goal Post
  • chanv1
  • · Replies 2 ·
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2
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8K
How Do You Calculate the Force Needed to Accelerate an Electron?
  • crimsonn
  • · Replies 2 ·
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2
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4K
Simple Harmonic Oscillation Frequency in a Traveling Car
  • sru
  • · Replies 1 ·
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1
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2K
Linear momentum handball problem
  • beastysk8er
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1
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5K
Tension woes simple mass problem
  • veitch
  • · Replies 1 ·
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1
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4K
Tension of 2 Ropes Find the Angle
  • diablito25
  • · Replies 10 ·
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10
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10K
Solving Problems with Newton's Laws - Hanging Chandelier
  • tiggrulz13
  • · Replies 5 ·
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5
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14K
Solving Chandelier Tension Problem: Find T1 Expression without T2
  • Amria
  • · Replies 3 ·
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3
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10K
Work Done by Force from 0 to 2 m - 20.4J
  • maniacp08
  • · Replies 7 ·
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7
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2K
Gravitational potential energy of satellites
  • pbumper1
  • · Replies 3 ·
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3
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7K
What is the velocity of raindrops in two reference frames?
  • chanv1
  • · Replies 2 ·
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2
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4K
Tension on a wire with equal angles
  • nicolette2413
  • · Replies 2 ·
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2
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6K
How Much Work Does It Take to Pull a Skier Up a Slope?
  • scurry18
  • · Replies 1 ·
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1
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3K
Calculating Net Force on Boxes of Different Masses in Contact
  • harrycc
  • · Replies 2 ·
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2
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2K
Tension in a wire, length change
  • CINA
  • · Replies 1 ·
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1
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7K
Can a Third Charge Achieve Zero Potential Between Two Unequal Charges?
  • jaejoon89
  • · Replies 5 ·
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5
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4K
Clocks out of Sync (Special Relativity)
  • Fusilli_Jerry89
  • · Replies 7 ·
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7
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4K
Calculate Displacement in a Police Car Scenario: Juction 4 to Accident
  • e-me
  • · Replies 3 ·
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3
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5K
Train Acceleration on Sharp Turn
  • chanv1
  • · Replies 12 ·
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12
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4K
Centripetal Force and maximum force
  • uno
  • · Replies 5 ·
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5
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3K
Why pizza chefs use “pizza cutters” to slice pies into sections
  • phys62
  • · Replies 2 ·
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2
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3K
Finding the velocity of sound in a tube.
  • minute34
  • · Replies 1 ·
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1
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2K
How Do You Calculate Initial Speed and Acceleration of a Slowing Truck?
  • physics_geek
  • · Replies 10 ·
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10
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3K
How does a charged particle behave in an electric field?
  • Precursor
  • · Replies 2 ·
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2
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2K