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.
Charge conservation for 3 parallel charged plates
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2K
Force transmitted to a block in viscous fluid through a spring, cord, and pulley
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6
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1K
Two Inverted Pendulums connected by a rope
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10
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683
Gauss' law problem -- Should the field due to both the inside and outside charges be taken into account?
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28
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Help finding the change in potential energy in this problem
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9
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Textbook 'The Physics of Waves': Linearity of Forced Oscillator
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6
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1K
Induced currents on a pair of separated dipole antennas
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2
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838
Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
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5
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1K
Ball launched from a height of 5 meters --- Projectile motion
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12
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Block on top of an inclined plane, with a rough surface, that moves with constant acceleration
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2
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41
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4K
Energy analysis of the system (leaking bucket from Morin's "Mechanics"
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5
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1K
Textbook 'The Physics of Waves': Lifetime of SHM Oscillators
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5
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1K
Textbook 'The Physics of Waves': Calculating Work Done by Force
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2
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1K
Textbook 'The Physics of Waves': Reason to force us to consider complex solution for harmonic motion?
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3
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1K
Is there a limit on how much energy a photon might have in a FOR?
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10
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1K
How to parametrize motion of a pendulum in terms of Cartesian coordinates?
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1
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1K
Is the line integral of tangential force in pendulum equal to the negative of change in potential energy?
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3
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1K
What is meant by small oscillations for this potential energy function?
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2
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1K
Initial velocity of bird landing on horizontal wire modeled as spring
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7
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1K
Circular motion of a Weightless rod
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18
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1K
Electric field of point along the central vertical axis of a triangle
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3
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1K
Proving Newton's 3rd law from conservation of momentum
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2
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982
Finding speed of two billiard balls in elastic collision
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9
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1K
Electromagnetism - Infinite plane of charge & Tension
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9
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1K
Measurement of the Stefan-Boltzmann constant
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6
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853
Why is the superposition principle valid here?
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5
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1K
Morin 3.7 -- Block sliding sideways on an inclined plane
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11
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2K
How Do Mass and Weight Differ?
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29
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2K
Equivalence of Euler-Lagrange equations and Cardinal Equations for a rigid planar system
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4
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2K
Rotating simple harmonic oscillator
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11
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Deriving speed equations | Elastic collision
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1
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944
Force analysis of a spring-bob system
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2
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834
Block on top of moving slab, with a rough surface - When does v_b=v_s?
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27
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2K
Impulse and perfectly inelastic collision between 2 points
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4
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1K
Conservation of energy of a bow and arrow
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3
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1K
Stretched spring attached to the center of a pure rolling disk
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11
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1K
What is taken as datum level for the following absolute potentials?
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2
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757
Applying Force on a Cylinder at an Angle
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8
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1K
Free Body Diagram of Mass-Spring System
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5
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2K
Conservation of Mechanical Energy - Which Equation To Use?
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9
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2K
Closest distance of approach between 2 charged particles
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5
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1K
System of two wheels of different sizes with an axle through their centers
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3
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67
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5K
Change in Entropy When Mixing Water at Different Temperatures
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5
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2K
Question About Momentum: Ball Rolling up a Curved Ramp
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12
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2K
Homer Simpson spinning inside an hourglass
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4
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748
Resultant force on a parachutist
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11
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1K
A moving boat with a flag on its mast
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15
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1K
Calculating work done by a gas
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2
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986
Length Contraction Problem for a Rod in a Spaceship
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4
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737
Perfectly inelastic collision between Projectile and a hinged disk
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26
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2K
Moving charge deflected by a loop of wire
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1
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949
Theory of relativity -- Car and Garage Paradox
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13
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1K
Maximum allowable value of a force
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5
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1K
Conservation of Momentum Problem - Mechanical and Kinetic Energies
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Dynamics of a Block on top of a slab with friction between them
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2
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33
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2K
Find the Period of Oscillation for a Mass Falling Through a Tunnel Through the Earth
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7
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1K
Textbook 'The Physics of Waves': Derive Complex Solution Form for SHM
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6
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1K
Is it friction or tension acting on the person hanging on a rope?
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4
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Could someone help me study this cyclic process of an ideal gas?
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2
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Spherical ball rolling back and forth in a bowl
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24
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2K
Determine the force with which the magnetic field of a coil acts on an infinitesimal cube of iron
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6
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1K
Speed of charged balls after collision
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13
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1K
Electric Field of a quarter ring
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3
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813
Maxwell disc linked to bar unwinds but stays at same height by raising bar
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2
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903
Gauss' Law with a Insulating Shell
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4
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21K
Induced EMF in a rotating ring
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14
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1K
For what values of total energy is the resulting motion periodic?
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25
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Why are moments not included in free body diagrams?
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2
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31
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Ruler measurements and knowing how many decimal places to include
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9
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4K
Energy analysis of this system (curved ramp up and a spring)
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29
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1K
Dispersion of rightward steps in 1-D random walks
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3
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784
B-field from a current in a wire above a conducting surface
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1
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717
Determining impulse given stopping distance and change in velocity
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6
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849
Special Relativity: spaceships heading toward each other
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7
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978
Quantum Mechanics - Time dependent solution - x's and t's not mixed up
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2
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858
Torques acting on a cylinder, with friction
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1
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657
Block connected to 2 real pulleys
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18
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1K
Manned spacecraft to Tau problem
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5
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724
Events occuring in 4D spacetime
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1
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678
A rod sliding/falling down on a frictionless horizontal plane
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8
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1K
Why is a 1d conservative force approximately linearly related to position?
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3
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874
Finding magnetic field using Ampere's Circuital Law
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5
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1K
Is My Understanding of Accelerations in Irodov 1.258 Correct?
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14
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Two masses connected by Pulley - Lagrangian problem
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6
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1K
Trying to Calculate Initial Velocity and Final Velocity
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2
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914
Colour depends on wavelength or frequency?
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22
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Magnetic field outside a semi-infinite solenoid
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12
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An ambigious optical system with ambigious solutions [JEE Adv - 20`16]
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19
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Lagrangian of a block on an inclined plane
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16
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1K
Failed rocket problem (momentum conservation, Kleppner 4-4)
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3
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919
Can a Falling Mass Generate 12V Using an Optimal Magnet and Coil?
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9
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962
Double pendulum Lagrangian using small angle approximation formula
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5
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1K
Euler- Lagrange equation proof
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2
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938
Find temperature of a U-shaped Tube
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9
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990
How far do acorns drift in the wind?
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9
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809
Rpm and power for this electric motor, gearbox and pulley system
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19
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1K
Normalising the wavefunction - two answers
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12
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1K
Relationship between linear velocity and angular velocity
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7
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1K
Is the Solution for Rotation of Spherical Mirrors Incorrect?
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16
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How can I determine the instant the block overcomes static friction?
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3
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61
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