50+ simulations · free
Interactive Physics Simulations
Change one value and watch the physics respond, right in your browser.
Kinematics·Vectors·Newton's Laws·Circular Motion·Gravitation·Simple Harmonic Motion·Waves·Fluids
Enroll Free
Steepen the slope and the block wins the tug-of-war: the acceleration flips and m₁ is pulled back up.
Simulation Models
Kinematics
Available in
days
days
after you enroll
- Why Are Distance and Displacement Different? A Time-Graph Simulation
- What Do Position and Velocity Graphs Tell You About Motion?
- Can Two Runners Have the Same Average Velocity on Different Routes?
- Why Isn't Average Speed Equal to Average Velocity?
- How Does Average Velocity Become Instantaneous Velocity?
- What is the difference between average acceleration and instantaneous acceleration?
- Is Acceleration Zero at the Top of a Throw? Free Fall Simulation
- How Do Position, Displacement, Velocity and Acceleration Differ in 2D Motion?
- How Do the x and y Components of Velocity Give Speed and Direction?
- Why Does a Horizontally Thrown Ball Land at the Same Time as a Dropped One?
Vectors
Available in
days
days
after you enroll
Newton's Laws of Motion
Available in
days
days
after you enroll
- Does an Object Need a Net Force to Keep Moving at Constant Velocity?
- How Do You Find Acceleration When Several Forces Act on an Object?
- Why Don't Action-Reaction Forces Cancel Each Other Out?
- Why Do You Lurch Forward When a Bus Brakes Suddenly?
- Does the Normal Force Always Equal the Weight?
- How Does Static Friction Build Up to a Limit Before the Box Slides?
- Which Way Does Friction Point on a Box in a Moving Truck?
- Why Does an Ideal Rope Carry the Same Tension Everywhere?
- Which Mass Wins? Dynamics of Connected Masses on an Incline
- Why Does Your Weight Seem to Change in an Accelerating Elevator?
- Why Is There a Minimum Speed at the Top of a Vertical Loop?
- How Does a Spring's Force Depend on How Far You Stretch It?
Friction, Drag Force & Uniform Circular Motion
Available in
days
days
after you enroll
- Why Is It Harder to Start a Block Sliding Than to Keep It Sliding?
- At What Angle Does a Block Start Sliding Down an Incline?
- Why Does a Falling Object Stop Speeding Up at Terminal Velocity?
- How Do Speed and Radius Affect the Centripetal Force You Need?
- How Does a Banked Curve Let a Car Turn Without Relying on Friction?
- Conical Pendulum Period — Does It Ever Match a Simple Pendulum of the Same Length?
Gravitation
Available in
days
days
after you enroll
- Why Do Equal Gravitational Forces Give an Apple and the Earth Unequal Accelerations?
- Why Does Gravitational Field Strength Fall as 1/r²?
- Why Is Gravitational Potential Energy Negative?
- Why does escape speed NOT depend on mass?
- Why Is T²/r³ the Same for Every Planet Orbiting the Same Star?
- Why Do Planets Speed Up When They Get Closer to the Sun?
Oscillations and Simple Harmonic Motion (SHM)
Available in
days
days
after you enroll
- What is simple harmonic motion and how is it defined?
- What Does the Phase Difference Tell You About Two Oscillators?
- How Do Displacement, Velocity and Acceleration Relate in Simple Harmonic Motion?
- How Do Kinetic and Potential Energy Trade Off in Simple Harmonic Motion?
- When Does a Pendulum Behave Like Simple Harmonic Motion?
- How Does a Rotating Circle Explain Angular Frequency in SHM?
- Why Does Damping Make an Oscillation Die Out?
- Why Is the Effective Spring Constant 2k for a Mass Between Two Springs?
- How Do You Measure a Bullet's Speed with a Block on a Spring?
Waves
Available in
days
days
after you enroll
Fluids
Available in
days
days
after you enroll
- What Happens to Fluid Speed and Pressure Where a Pipe Narrows?
- How Do You Apply Bernoulli's Equation Between Two Points at Different Heights?
- What Decides Whether an Object Floats or Sinks in a Fluid?
- How Much of a Floating Object Is Submerged in a Fluid?
- How Do Continuity and Bernoulli's Equation Work Together in a Narrowing Pipe?
- How Does an Open-End Manometer Tell You a Gas's Pressure?
- How Does a Mercury Barometer Measure Atmospheric Pressure?
- How Does Pascal's Law Help Lift Heavy Objects?
PRINTABLEOFFLINEYOURS TO KEEP
