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.
A rod that falls while rotating from the end of a table
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Question about Projectile Motion: Throwing a Flower Pot from a Balcony
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18
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Doubt regarding View factor/shape factor of infinite inclined plate
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3
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The speed of the point of intersection of two uniformly moving lines
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24
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Theoretical velocities at different heights sliding down an inclined plane
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4
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How to determine if electrical components are connected in parallel or in series?
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Electric flux through an inclined cylinder
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16
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A charge q approaching two stationary charges q1 and q2
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7
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Analyzing this 2-lens optical system
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Charge conservation for 3 parallel charged plates
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19
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Force transmitted to a block in viscous fluid through a spring, cord, and pulley
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6
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Two Inverted Pendulums connected by a rope
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10
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715
Gauss' law problem -- Should the field due to both the inside and outside charges be taken into account?
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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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Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
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5
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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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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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Textbook 'The Physics of Waves': Calculating Work Done by Force
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2
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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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Is there a limit on how much energy a photon might have in a FOR?
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10
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How to parametrize motion of a pendulum in terms of Cartesian coordinates?
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1
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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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What is meant by small oscillations for this potential energy function?
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2
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Initial velocity of bird landing on horizontal wire modeled as spring
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7
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Circular motion of a Weightless rod
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18
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Electric field of point along the central vertical axis of a triangle
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3
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Proving Newton's 3rd law from conservation of momentum
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2
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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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887
Why is the superposition principle valid here?
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5
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Morin 3.7 -- Block sliding sideways on an inclined plane
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11
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How Do Mass and Weight Differ?
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29
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Equivalence of Euler-Lagrange equations and Cardinal Equations for a rigid planar system
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4
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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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991
Force analysis of a spring-bob system
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2
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882
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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Impulse and perfectly inelastic collision between 2 points
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4
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Conservation of energy of a bow and arrow
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3
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Stretched spring attached to the center of a pure rolling disk
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11
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What is taken as datum level for the following absolute potentials?
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2
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Applying Force on a Cylinder at an Angle
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8
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Free Body Diagram of Mass-Spring System
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5
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Conservation of Mechanical Energy - Which Equation To Use?
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9
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Closest distance of approach between 2 charged particles
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System of two wheels of different sizes with an axle through their centers
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Change in Entropy When Mixing Water at Different Temperatures
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Question About Momentum: Ball Rolling up a Curved Ramp
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Homer Simpson spinning inside an hourglass
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Resultant force on a parachutist
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A moving boat with a flag on its mast
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15
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Calculating work done by a gas
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2
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Length Contraction Problem for a Rod in a Spaceship
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4
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Perfectly inelastic collision between Projectile and a hinged disk
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26
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Moving charge deflected by a loop of wire
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Theory of relativity -- Car and Garage Paradox
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Maximum allowable value of a force
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5
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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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Find the Period of Oscillation for a Mass Falling Through a Tunnel Through the Earth
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7
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Textbook 'The Physics of Waves': Derive Complex Solution Form for SHM
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6
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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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Spherical ball rolling back and forth in a bowl
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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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Speed of charged balls after collision
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13
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Electric Field of a quarter ring
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3
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Maxwell disc linked to bar unwinds but stays at same height by raising bar
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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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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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31
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Ruler measurements and knowing how many decimal places to include
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9
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Energy analysis of this system (curved ramp up and a spring)
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29
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Dispersion of rightward steps in 1-D random walks
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3
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839
B-field from a current in a wire above a conducting surface
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1
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746
Determining impulse given stopping distance and change in velocity
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6
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Special Relativity: spaceships heading toward each other
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7
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Quantum Mechanics - Time dependent solution - x's and t's not mixed up
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2
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890
Torques acting on a cylinder, with friction
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1
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Block connected to 2 real pulleys
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18
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Manned spacecraft to Tau problem
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5
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750
Events occuring in 4D spacetime
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A rod sliding/falling down on a frictionless horizontal plane
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8
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Why is a 1d conservative force approximately linearly related to position?
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3
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Finding magnetic field using Ampere's Circuital Law
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Is My Understanding of Accelerations in Irodov 1.258 Correct?
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Two masses connected by Pulley - Lagrangian problem
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6
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Trying to Calculate Initial Velocity and Final Velocity
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2
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973
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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Failed rocket problem (momentum conservation, Kleppner 4-4)
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3
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976
Can a Falling Mass Generate 12V Using an Optimal Magnet and Coil?
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9
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999