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.
Electrostatic force sphere problem
  • jssutton11
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Calculating Voltage Across Two Connected Capacitors
  • h0dgey84bc
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Calculate the coefficient of friction on a rotating carnival ride
  • kevinlmoses
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2
Calculating Roller Coaster Speed at the Bottom of a Dip
  • lmc489
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4
What is the force exerted by the rope on the bucket of water?
  • Claudia16
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7
Why Does the Scale Reading Change in an Accelerating Elevator?
  • keemosabi
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Please help, quick and simple. Potential Energy of Spring?
  • jgibbon2
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6
Ball and Runner: Catching at the Bottom of a Building
  • star20
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Average coefficient of friction
  • Bones
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Could someone me? I would REALLY appreciate anything
  • Miss1nik2
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1
What is the Speed of a Ball at its Highest Point Using Conservation of Energy?
  • Bones
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Conservation of mechanical energy problem
  • renob
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Solving Two-Block Pulley System w/Expln
  • keemosabi
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4
Drag care race, finding distance and time
  • Prio
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1
How Does Changing Spring Constants Affect Mass Oscillation?
  • wripples
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Breakdown Potential of a Cylindrical Capacitor
  • breez
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5
I have 3 homework questions that i did, can someone just check for correctness?
  • username111
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What is the Relationship Between Spring Constant and Mechanical Energy?
  • Awwnutz
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3
Calculating Time for Round Trip with Steady Wind - Air Race Problem
  • iluvphys
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2
Finding maximum acceleration of truck without having package fall off.
  • soul_observer
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8
Finding the velocity and covered distance of Astronaut pushing asteroid
  • soul_observer
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7
Particle sliding on a track (cons. of energy problem)
  • musicfairy
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2
Maximizing Velocity and Range of a Rocket with Changing Mass
  • Ashleyz
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4
Voltage of battery through voltmeter
  • sebby
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2
How far does a sliding block on an incline go before stopping?
  • a18c18
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5
Head-on elastic collision between two masses
  • mangafan
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4
How Is Work Calculated When No Distance Is Given?
  • shonuff2
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What is the Mass of Your Faster Running Friend?
  • a18c18
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Crate being pulled with and without friction
  • eioous
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2
Dipole moment electric potential
  • jelliDollFace
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3
Finding the coefficient of kinetic friction
  • physics_fool
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3
What is the tension in a climber's rope while rappelling down a cliff?
  • lacar213
  • · Replies 4 ·
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Energy with nonconservative forces
  • maniacp08
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1
Newton's 3 Laws Lab: Solving Problems on Inclined Plane
  • Kandycat
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Uniform/nonuniform electric fields
  • jaejoon89
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1
Banked Curve- find the Velocity when static MU=0
  • Phoenixtears
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Ballistics Pendulum Homework: Solving for Velocity After Bullet Emerges
  • 12boone
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Solve Simple Loop Problem: Find Speed at Point A
  • Guruu
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2
Help with Mass OF rectangle who's density varies:
  • Naldo6
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Speed of a ball after collision
  • Naldo6
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Calculating Frictional Force on Cork of Bottle: Pressure & Radius
  • Kickbladesama
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Angular accelaration problem help
  • alexito01
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How Fast is the Roller Coaster Car at the Top of the Hill?
  • hbteen
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Coeffiecient of Kinetic Friction problem? (Shuffleboard and Distance traveled)
  • glindawantsme
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How Much Mass Must a Rocket Expel to Alter Its Course by 35 Degrees?
  • pinkerpikachu
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Unit for the slope of a circular motion relationship
  • Epsillon
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Simplifying Trig Homework Statement | Limit x-->0 for (secx-1)/x^2
  • lax1113
  • · Replies 9 ·
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9
Question from our Lab today on Friction
  • Husker70
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What Does the Ångström Unit Mean in Wavelengths?
  • homestar
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3
Is Work Done Pushing a Car Up an Incline Independent of the Angle?
  • drewdiddy
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Magnitude of force on a sliding object- help pleaaase
  • tiffany09
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Lenz's Law: Determine Current A-B/B-A
  • anifau98
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Two questions - Electric Potential
  • bcjochim07
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Calculate 1st Order Correction to Hooke's Law Period
  • dknight237
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2
What Is the Potential Energy and Gravitational Force on a Satellite?
  • Husker70
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Force Vector into a Force (Power)
  • Havok23
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Help on Ballistic Pendulum Angle
  • Naldo6
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Work and Power Homework problem
  • Santorican
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4
Need help on question Newton's second law
  • phynoob
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Determining instantaneous velocity from a graph
  • 312213
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Circular motion and Newton's law question
  • bokonon
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The Equations of Rotational Kinematics
  • pstfleur
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Lack of friction in Applied Physics
  • s31t8n8
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Pool ball collision, kinetic energy
  • krausr79
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Moving down on a frictionless plane
  • lacar213
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What is the Average Net Force on a Diver During a Fall into a Swimming Pool?
  • Naldo6
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Calculating Distance of Block Sliding Down Ramp
  • Chrisleo13
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4
How Do Helper Springs Work in Truck Suspensions?
  • deaner08
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Work/spring: Work Done by Gravity & Spring Compression - 760 kg Elevator
  • Bones
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Determining the support reactions on a frame
  • JJones_86
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How Should a Pilot Adjust Course in Wind to Maintain Direction?
  • mattst88
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Power Problem at inclined angle
  • emmi1987
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Elastic Collisons (Conservation of Ke and P)
  • notagenius08
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MotorcyclePower: Level vs Sloped Road
  • leezak
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How Does Impulse-Momentum Theorem Determine Speed and Average Force?
  • kennien
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Projectile motion, need to find angle
  • frosti
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Find μk between the block and the inclined plane?
  • HebrewHammer
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3
Equilibrium problem (torque and forces)
  • ch0psr0x
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Projectile Motion: Boulder from Cliff to Plain
  • jackleyt
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Calculating Work and Speed on a Frictionless Incline
  • Bones
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Conservation of energy in a pendulum
  • maniacp08
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Solving Free Fall Problem: Initial Speed & Height for Same Time Impact
  • tlogan
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5
How Do I Calculate the Gravity on Saturn with its Given Radius and Mass?
  • HodaM
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Calculating the Force Needed to Pull a Block
  • HodaM
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Understanding Acceleration: Solving Two Rocket and Gun Questions
  • username111
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HELP A dynamic question with friction
  • Kudo Shinichi
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Newton's 2nd Law Homework: Average Force of Tennis Ball
  • lacar213
  • · Replies 2 ·
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Kinetic Friction of sliding down a pole
  • lacar213
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Help A question on circular motion
  • Kudo Shinichi
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How Can Uniform Acceleration and Velocity Affect Train Travel Times?
  • Prio
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What is the magnitude of the normal force in this block stacking scenario?
  • lacar213
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3
What Happens to X When Force and Total Energy Are Defined by U(x)?
  • veronicak5678
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Solving 2 Motion Questions: Boat and Plane
  • tornzaer
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How Does Tension Vary Along a Rotating Rod?
  • f(x)
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What is the speed of the discus at release?
  • mastiffcacher
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Calculating Energy Ratio (Ef/Ei) for Earth's System
  • jbgibson
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Spring / constant applied force question
  • kennien
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Work Done without using the Conservation of Energy
  • veronicak5678
  • · Replies 11 ·
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Work Done by Father on Girl's Sled Up Hill
  • colts2775
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Helicopter accelerates while liftin what are the forces' magnitudes?
  • Natali
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1