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.
Newtonian Physics Lab- Uncertainty and Angular Momentum
  • ultrapowerpie
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Angular Acceleration: Find Angle in 2 Seconds
  • omgitsmonica
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How Is Rotational Kinetic Energy Calculated for Two Balls on a Rod?
  • dsptl
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Best way to discharge a capacitor
  • slammer
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What Is the Correct Method to Calculate the Orbital Period of GPS Satellites?
  • rsfancy
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Conservation of energy of a pendulum
  • maniacp08
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Problem With Work Done by a Spring Force
  • Senrai
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4
Amusement Park Centripetal Force Around A Loop
  • GoSS190
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2
Spring, Friction, Incline, Mass moving up a Ramp
  • twilos
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I got the formula, what does the angle effect? Net Magnetic force
  • mr_coffee
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Momentum and Collisions of a particle
  • nastassja
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2
Finding index of refraction using wavelength and 2 angles?
  • maxfails
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3
Orbital Radius of 15 Geostationary Satellites for 14 Daily Passes
  • masterofphys
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How to specify the direction of Friction force
  • UNknown 2010
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9
Proton Beam therapy (magnetic field)
  • tombroz
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2
Forces on a body in contact with a horizontal plane
  • eatingblaa
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12
How Much Pressure Is Required to Compress an Iron Block by 0.16%?
  • zyphriss2
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1
How Do I Calculate Arrow Velocities Using a Ballistic Pendulum?
  • Jdpaul88
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1
Basic Time Dilation and Relativity Questions
  • Epsillon
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1
Find minimum stopping distance of a car
  • evan b
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1
Finding the expression of the bullet's speed, vB
  • lmc489
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25
Work and Spring Stiffness Constant
  • sugarntwiligh
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3
Which Elevator Movement Requires the Least Force to Move a Crate?
  • rulzwrld
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5
Elastic Collision of a Ball and Block on a Wire
  • emmi1987
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3
What is the original maglev car experiment equation
  • Jordan Byrd
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1
Finding Magnetic Field at Point P
  • 0338jw
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1
What is the average force exerted by the ball on the wall
  • Chrisleo13
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3
Projectile Motion: Finding Height & Time for Archer's Target Shot
  • harrycc
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5
Calculating Kinetic Energy of a Rotational System with a Hanging Weight
  • CaptainSFS
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3
How is Work and Energy Calculated in a Horizontal Table Setup?
  • Kudo Shinichi
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2
Centripetal Force in an amusement park ride
  • GoSS190
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13
Jumping into a pool from a balcony
  • rkiraly
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1
Calculate Stress & Strain of Marble Column - 1.5m^2, 2.5x10^4kg
  • zyphriss2
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2
Calculating Block Positions: Spring Question Solution | Edugen Course 1650
  • AnnieD
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How to Calculate the Maximum Resultant of Two Vectors?
  • rkiraly
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3
How to Calculate Drift Velocity in a Hall Effect Experiment?
  • Staple Gun
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Solve Rotational Problem Homework: Force to Hold Wheel Still at 60 cm Radius
  • thepanda
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How Is the Mass of the Target Nucleus Calculated in an Elastic Collision?
  • Emendez3
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2
How can I solve 1-D kinematics problems with limited resources?
  • Imabur.
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3
How Do You Calculate Bullet Speed in a Ballistic Spring System?
  • jemstone
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Find the resistance of the lamp
  • shinobi12
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How Do You Calculate Resistor Values in a Circuit?
  • shinobi12
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What is the average pressure exerted on the other pedestal.
  • lokal704
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6
What is the Mass of Meter Stick in Sketch?
  • jammhawk
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Centripetal acceleration automobile problem
  • Haniszmi
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Centripetal Force Problem: Calculating Speed of a Model Airplane on a String"
  • Haniszmi
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3
How Far Does a Rolling Coin Travel Before Stopping?
  • Leid_X09
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Conservation of Energy and a spring
  • maniacp08
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Current in wire that's being held up magnetic field of two others
  • Sasha26
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Calculate minimum speed of an object in circular motion
  • johnarma
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3
How Far Does the Hockey Puck Travel in 9 Seconds?
  • aquapod17
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Parallel and Series Homework: Calculating Voltages and Charges
  • jaredmt
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Find the intial velocity given the coefficient of kinetic friction
  • ScullyX51
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3
Projectile motion of a ball launch
  • southernbelle
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6
How Does Changing the Voltmeter Affect Potential Difference Readings?
  • sallyishyper
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How to Calculate Frictional Force on a Moving Cart?
  • PsyPhysics7
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Trying to find orbital radius of a satellite
  • masterofphys
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Tangential and radial components of acceleration - answer seems odd
  • Vanessa23
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Potential energy of a particle
  • steelydan8821
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Moving Blocks Connected by a spring
  • Deadsion
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6
Pushing a Box on Frictionless Floor: Worker's Force & Box's Weight
  • steelydan8821
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Electric potential and velocity of a proton
  • Foxhound101
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8
Radius of curvature of 1 MeV electron in 1 Tesla B field
  • tuathan
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Rho Symbol for Density: Using in Google Docs
  • Banaticus
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6
What is the initial velocity of the bullet when it is shot into the block?
  • steelydan8821
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3 concentric shells - potentials
  • alexmahone
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Capacitors/Opening Circuit/Charge
  • ma3088
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Center of Mass. Confused on part b.
  • Quickster357
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Momentum, conservation of momentum
  • Jessicaelleig
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How Do You Calculate Error Propagation for Logarithmic Functions?
  • prize fight
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Find the Tension in the rope ( really simple )
  • rulzwrld
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3
Analyzing Pulley System: Acceleration and Masses
  • asi123
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16
Solving a Wheatstone Bridge with 5 Resistors
  • katrascythe
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What is the direction of I2 in this circuit?
  • StephenDoty
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10
How Does Train Acceleration Affect Projectile Firing Angle for Maximum Distance?
  • Lamoid
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1
Angular motion problem involving a car coming to a stop
  • xregina12
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3
Hanging a Mirror: Find Optimal Size for Dressing Room
  • sarahefried
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Scale drawing with Cartesian solution and Polar representation
  • mmd123
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Finding the Coefficient of Kinetic Friction for a Pulley: A Quick Guide
  • sugarntwiligh
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How Large Must the Force Be to Keep the Crate Moving at Constant Speed?
  • HeavOnEarth
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Magnitude of force during a tug of war
  • bmandrade
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Emf and internal resistance of a battery
  • StephenDoty
  • · Replies 11 ·
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Kinetic friction free body diagram
  • bmandrade
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10
How Is Work Done by Friction Calculated for a Crate Pulled at a Constant Speed?
  • JSmith2009
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Find masses on an equilibrium plane
  • Naldo6
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Finding Velocity given x and y velocities
  • MrMiguel
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A couple Force, work, KE, and spring problems I'm working on.
  • raven2783
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Understanding Incline Planes & Vector Issues
  • korters
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Help me in problem related to simple harmonic oscillations
  • Hareesh
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2
Physics olympiad - electrostatics
  • alexmahone
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2
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A Problem on Simple Harmonic Oscillations
  • Hareesh
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Problem related to Simple Harmonic Oscillations
  • Hareesh
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Solving Horizontal Rifle Bullet Gravity Problem
  • nasjo30
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Relative speed between two objects
  • Husker70
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How Do I Solve Energy and Conservative Forces Problems?
  • zoner7
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12
Angular Velocity on a circular platform
  • Naldo6
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3
Angular motion problem (wheels on a car coming to a stop)
  • xregina12
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What is the momentum at its maximum height?
  • redhot209
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How Do Newton's Laws Apply to These Real-World Physics Problems?
  • nns91
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Find the kinetic energy stored in the flywheel
  • persephone
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