Introductory Physics Homework Help Forum

Bullet velocity using impulse-momentum

Angular velocity of a merry go round after a child has jumped onto it

Centripetal force and acceleration problem

What is the final speed of the crate?

What is the speed of the crate when it reaches the bottom?

How Do I Calculate the Maximum Height of a Projectile?

Pipes and resonant mode with a node in exact center

Comparing brightness of bulbs in series and parallel circuits

Bungee jumper(Conservation of mechanical energy)

Finding resistance in a vacuum (triode?)

Special Relativity, Length Contraction

Solve Elastic Collision: Momentum vs Kinetic Energy

Find work done given time, acceleration, and mass

What is the Required Frequency for Simple Harmonic Motion Testing?

Solve Lagrangian Ques: Point Mass on Rotating Hoop

Tricky problem about angular momentum / rotational mechanics.

What Does the Scale Show When the Elevator Accelerates Upwards?

Instantaneous Acceleration on a Velocity-Time Graph

Magnitude of Momentum, relative to the center of mass

What Factors Affect the Distance of Strong Signals in Radar Transmission?

Conceptual understanding of circular motion

How Is Internal Energy Affected in the Water to Steam Conversion at 100°C?

What are the forces and displacement involved in this body's movement?

Acceleration in pulley system with two masses and angled cables

How Is the Magnetic Field Calculated to Levitate a Wire Carrying Current?

Thermodynamics - shaking a bottle with liquid

Car with 20% engine efficiency and 1000 N retarding force: km per liter?

Perpendicular Vector with given magnitude

Is there an easier way to solve for theta in this equilibrium problem?

Motion up an Inclined Plane - Not sure if I did it right

Rotational physics conceptual questions

Two masses one woman one acceleration

Calculate magnitude and direction of mass's acceleration.

Why does tension act in opposite directions on two connected masses being pulled?

A Proton is fired from far away towards the nuclues of a mercury Atom

Μk sliding friction of a block down an Inclined Plane

Calculating Potential Energy Increase in a Massless Spring

What Height Does the Package Rebound to After a Perfectly Elastic Collision?

Graphing Equations with Fractions on a TI-84 Calculator

Finding the mass of an object suspended by two ropes

Is Negative Total Energy Possible in the Universe?

Frictional Forces and Acceleration: Solving for Horizontal Component

Finding velocity when a mass suspended from a spring passes through equilibrium

Kinematics of a Falling Object: Calculating Velocity

How High Does the Dart Travel When the Spring is Compressed Half as Far?

Kinematics: Falling from a Tree

What is the velocity of a particle at t=2seconds given force function (x)

Finding Velocity in Spring Problem

Why does horizontal tension improve accuracy in a spinning eraser experiment?

Velocity and acceleration graph of this force?

Angle and Frequency in Horizontal Circular Motion

Clock Hands Lengths: Hour 4", Minute 6", Second 7" | 24hr Travel

Spring Compression HW: Work, Height, Max Compression

Average Power and Work-Kinetic Energy Theorem problem

Uniform circular motion - stone in pail

Design Portable Container for Medicine at 4 °C for 12 Hours

How can you determine the forces in equilibrium without using calculus?

Pole-Vaulter Landing on a Padded Surface

Static Equilibrium/Torque-Calculating the force required to tip a box

Coefficient of friction on wood problem

Calculating Vertical Distance of Electron in 2D Motion

Finding parallel and perpendicular force components and normal force

Why Do Overloaded Brakes Emit Flames?

Calculating Distance and Displacement in One Dimension

How Do You Calculate the Mass of the Second Penguin?

Integrating non-constant acceleration to give time

Uniform circular motion mass problem

What is the force constant and work done in stretching a Hooke's-law spring?

Finding Maximum Speed of Block on Vertical Spring

Two gravitating objects in space and truck forces on a curve

Work problem, involving a circle and velocity

Pushing at an angle up an inclined plane

Finding i(t) across R3 and R2 after switch opens at t=0

Golf Ball Question: How Far Does It Travel?

Finding resultant of three vectors at different angles

Finding Force of Contact: 2kg and 3kg Blocks with 10N Horizontal Force

Reflectance and Transmittance of Light in Water-Glass Interface

How Does Power Affect Car Acceleration with Air Resistance?

Why Static Charges are Affected on Dry Days

Two magnetic carts with initial velocities momentum problem

Spring launching a rock: why is my calculation wrong?

Why does a rock dropped from greater height exert more pressure on impact?

Finding powder volume from weight without knowing density

Work and Energy of falling mass attached to mass with friction on incline.

Kinetic friction coefficient for crate sliding down 34° ramp

Car accelerating with constant power P: find v(t), x(t), a(t)

Finding alpha from spring oscillation data using intercept and k

How much weight 2 different angled ropes can support

Bungee jumper maximum speed calculation using energy conservation

Acceleration and tension with two crates pulled by hanging mass

• Poll

What is the Reaction to the Force of Gravity on a Suspended Lead Block?

Work and potential energy for snowball fired from cliff

Guitar string - standing wave question

Force on an Object: Find Force Exerted by 7.0kg Block

Work and Kinetic Energy Question.

How Does Adding a Second Mass Affect the Dynamics of a Vertical Spring?

Finding Speed Using Conservation of Energy

Thermodynamics Cubes of Metal Problem

Thick spherical shell confirmation of solution

What is the acceleration of the upper block connected by a string?