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.
How Does a Pogo Stick Utilize Spring Mechanics for Maximum Jump Height?
  • CNauert
  • · Replies 3 ·
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3
Objects on a Slope - Pretty Easy
  • bobber205
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1
How Far Will the Block Travel Up the Incline?
  • cj3
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1
Banked Circular Motion Problem: Calculating Normal and Friction Forces
  • petsgomoo13
  • · Replies 2 ·
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2
How Can the Work-Energy Theorem Be Applied to Calculate Block Speed?
  • dsptl
  • · Replies 6 ·
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6
How Can I Solve These Physics Homework Problems on Motion and Friction?
  • fronomo
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2
How Does a Rod's Angle Change in an Accelerating Car?
  • davesface
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2
What Happens to Water Level When a Brick is Tossed from a Boat?
  • blade_chong
  • · Replies 20 ·
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20
Does Tension Remain Constant in a String with Rollers and a Hanging Weight?
  • stringtension
  • · Replies 10 ·
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10
Find velocity and Kinetic Energy of a Springy Toboggan
  • SelHype
  • · Replies 1 ·
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1
Help physic to calculate btw satellite and earth
  • lovelycecila
  • · Replies 1 ·
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1
What Are the Physics Behind Bungee Jumping?
  • kittychg
  • · Replies 5 ·
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5
Radial and tangential acceleration
  • steph35
  • · Replies 1 ·
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1
Projectile motion on an inclined plane
  • steph35
  • · Replies 1 ·
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1
How to Find Tension in a String on an Inclined Plane: Physics Homework Help
  • fronomo
  • · Replies 1 ·
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1
Projectile problem-A rock is kicked off a 45 Degree hill at 15m/s.
  • Kizaru
  • · Replies 4 ·
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4
Help with some Moments problems
  • vdfortd
  • · Replies 1 ·
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1
How Does the Speed and Direction of a Car Affect the Apparent Angle of Rainfall?
  • frangieh
  • · Replies 2 ·
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2
How Do You Calculate Moment of Inertia for Connected Masses?
  • Jaklynn429
  • · Replies 1 ·
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1
Calculate speed v in crossfield hall effect
  • th3plan
  • · Replies 1 ·
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1
Understanding Rotational Velocity in a Hamster Wheel
  • flash
  • · Replies 12 ·
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12
Relative Velocity Homework: Find Speed of River
  • Garicup
  • · Replies 1 ·
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1
Ball thrown down simplify for time. HELP
  • reltz
  • · Replies 3 ·
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3
What Speed Should a Swimmer Have to Cross a River Directly?
  • frangieh
  • · Replies 2 ·
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2
Finding Velocity and Height of a Kicked Ball
  • a2k22
  • · Replies 11 ·
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11
Calculating Delta h for a Projectile Fired at 50 Degrees without Air Resistance
  • a2k22
  • · Replies 17 ·
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17
Man Throws Ball 138m Horizontally, How Far Vertically?
  • a2k22
  • · Replies 9 ·
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9
Potential energy of gravitational force
  • diablo2121
  • · Replies 2 ·
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2
Velocity Time Graphs and Questions
  • Run4Fun
  • · Replies 2 ·
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2
What Electric Field is Needed to Undeflect Electrons in a Magnetic Field?
  • Stryker321
  • · Replies 1 ·
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1
Help Physics (I think its free fall)
  • coriimon
  • · Replies 3 ·
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3
Two pulleys system (please check my work)
  • fishingspree2
  • · Replies 3 ·
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3
What Speed is Required for a Half-Court Jump Shot in Basketball?
  • bam3211
  • · Replies 3 ·
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3
How to Determine Tensions in Cables for a Suspended Speaker System?
  • Melawrghk
  • · Replies 2 ·
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2
Projectile Motion stone dropped
  • bkoiskewl1
  • · Replies 1 ·
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1
How Does Speed Affect Radar Frequency Shift?
  • akan
  • · Replies 3 ·
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3
Pressure Amplitude Calculation for Sound Waves
  • akan
  • · Replies 2 ·
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2
Solving for the RPM of a Malfunctioning Motor
  • akan
  • · Replies 2 ·
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2
Deleting a Physics Post: How-To Guide
  • petsgomoo13
  • · Replies 1 ·
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1
An acceleration/distance/velocity question.
  • username111
  • · Replies 1 ·
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1
Simple physics kinematic one dimension problem?
  • papi
  • · Replies 2 ·
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2
Solving Work Problem: Kinetic Energy of Toy Car After Braking
  • Dwrigh08
  • · Replies 3 ·
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3
What is the direction of the wind in this airplane problem?
  • iluvphys
  • · Replies 16 ·
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16
Birds in uniform cirular motion
  • iluvphys
  • · Replies 3 ·
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3
Jumping on a trampoline and energy conserved/ not conserved
  • menotyou9
  • · Replies 1 ·
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1
Using Impulse-Momentum to Find Time of Falling Object
  • jheld
  • · Replies 1 ·
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1
What happens when two springs are connected in series and then cut?
  • musicfairy
  • · Replies 16 ·
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16
Kinetic Friction and Ropes and Pulleys
  • dizkoducky
  • · Replies 1 ·
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1
How Much Force Does a Golf Club Apply to a Ball?
  • PhysicFailure
  • · Replies 2 ·
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2
Why Does the Wheel Appear to Rotate Counterclockwise When Projected?
  • mellah
  • · Replies 2 ·
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2
Calculating Torque of Athlete's Arm at the Gym
  • Jaklynn429
  • · Replies 4 ·
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4
Forces & Two Charges- Quick question
  • bcjochim07
  • · Replies 1 ·
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1
Graphing Terminal Velocity using Euler's Method
  • jinksys
  • · Replies 3 ·
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3
Mag feild two wires opposite directions
  • goWlfpack
  • · Replies 3 ·
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3
Calculating Deceleration on an Uphill Road
  • lokal704
  • · Replies 3 ·
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3
Calculating Counterweight for Platform Stability
  • sailsinthesun
  • · Replies 6 ·
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6
Electric field from potential energy
  • physstudent1
  • · Replies 2 ·
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2
Solving the Mystery of the Turkey Wishbone Problem
  • kevi555
  • · Replies 1 ·
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1
Circular Motion of amusement park ride
  • rg67
  • · Replies 2 ·
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2
Block sliding down a ramp in a truck
  • davidmigl
  • · Replies 1 ·
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1
Solving the Velocity of Two Tied Bricks Problem
  • Norway
  • · Replies 8 ·
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8
Acceleration of 3.8kg Object: 110.58 m/s2, 28.66°
  • wallace13
  • · Replies 1 ·
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1
Gravitation Force Between Two Massive Bodies
  • tater08
  • · Replies 3 ·
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3
Gravitational Pulls- Acceleration decreases as object is farther from center
  • Phoenixtears
  • · Replies 3 ·
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3
Momentum Problem: Find Speed of Block After Inelastic Collision
  • dsptl
  • · Replies 1 ·
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1
Momentum dealing with 1D Collisions
  • maniacp08
  • · Replies 1 ·
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1
Static Equilibrium Rope Problem
  • Miss Figgy
  • · Replies 1 ·
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1
Conservation of Energy Block Velocity Problem
  • Bones
  • · Replies 5 ·
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5
Force Vector Problem with Friction
  • marker403
  • · Replies 1 ·
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1
Solving a Several Step Problem: Velocity & Thermal Energy
  • Bones
  • · Replies 4 ·
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4
Find the magnitude, direction, and location of the force
  • Inertialforce
  • · Replies 1 ·
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1
Is Electrostatic Potential Energy Always Equal to Work Done by Discrete Charges?
  • jaejoon89
  • · Replies 1 ·
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1
How Do We Calculate Kinetic Friction and Net Force in a Donkey-Cart System?
  • CINA
  • · Replies 1 ·
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1
Projectile Motion, finding g on a planet
  • steph35
  • · Replies 1 ·
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1
Calculating Total Kinetic Energy After Explosion
  • Grogerian
  • · Replies 2 ·
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2
Solving a Frictionless Bug Problem in a Bowl
  • Grogerian
  • · Replies 1 ·
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1
Calculating the Period Time of a Ball Inside a Ball
  • asi123
  • · Replies 1 ·
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1
How Is Static Friction Calculated from Deceleration Data?
  • SciGuy26
  • · Replies 1 ·
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1
Elastic Energy and Conservation of Energy
  • HelloMotto
  • · Replies 1 ·
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1
Capacitance question What is C_eq?
  • jaejoon89
  • · Replies 1 ·
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1
Solving Car Overtaking Length with 50mi/h and 45mi/h Cars
  • rigor
  • · Replies 2 ·
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2
Uncertainty Propagation in Fractional Expressions
  • Oerg
  • · Replies 16 ·
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16
Calculating Speed of Ball Leaving Spring Gun Barrel
  • sealmap87
  • · Replies 3 ·
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3
Finding the angular speed in rpm
  • lmc489
  • · Replies 9 ·
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9
Does a uniform system always indicate rotational equilibrium in torque problems?
  • Inertialforce
  • · Replies 1 ·
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1
Applying the work-energy theorem
  • hpnhpluv
  • · Replies 1 ·
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1
Magnetic field two parallel wires
  • goWlfpack
  • · Replies 1 ·
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1
Magnetic feild in circular coil
  • goWlfpack
  • · Replies 1 ·
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1
KVL with a current source in loop
  • ThomasHW
  • · Replies 1 ·
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1
Calculate Buoyancy of Barge: 2.8 x 10^5 kg, 19.8m Long, 10.5m Wide
  • Kickbladesama
  • · Replies 2 ·
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2
Can You Calculate the Densities of Metal and Oil?
  • crossfaith20
  • · Replies 1 ·
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1
The Impulse and Average Force of a Bouncing Handball
  • maniacp08
  • · Replies 5 ·
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5
2d Projectles Motion/Kinematics
  • Jessicaelleig
  • · Replies 1 ·
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1
Newtons Laws-Force with respect to time
  • mikee
  • · Replies 1 ·
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1
Block, Ramp, Friction, and Spring work done
  • Awwnutz
  • · Replies 4 ·
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4
Mass Spectrometry Homework:Separating Carbon Isotopes with Mag Field
  • cds5615
  • · Replies 1 ·
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1
Terminal Velocity of a ping pong ball
  • phil ess
  • · Replies 7 ·
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7
How Do You Calculate Acceleration and Initial Speed from Segment Times?
  • osamie
  • · Replies 1 ·
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1
Finding an angle in the direction of displacement
  • ilovedeathcab
  • · Replies 1 ·
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1
Calculating Tension on Two Wires Attached to 200g Sphere
  • lmc489
  • · Replies 1 ·
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1