Inclined Plane Simulator
Drag the block and tilt the ramp yourself, flick it, and watch forces, speed and energy update live.
Drag the block, flick it, or drag the glowing end of the ramp to tilt it.
About the Inclined Plane Simulator
Free interactive inclined plane simulator. Drag the block, flick it, tilt the ramp with your finger or mouse, and see weight components, normal force, friction, acceleration, a live speed graph and energy bars. Built for physics, the inclined plane simulator runs instantly in your browser: change a setting or drag an object and the result updates at once, so you learn by trying things out rather than only reading about them.
Drag the block and tilt the ramp yourself, flick it, and watch forces, speed and energy update live. Use it to explore physics ideas at your own pace, then check what you found against the key ideas further down this page.
How to use the Inclined Plane Simulator
- Use the controls to change Ramp angle, Mass, Surface, Static friction μs, Kinetic friction μk. The simulation reacts instantly.
- Pick an option such as Ice, Smooth wood, Rough wood, Rubber to switch modes or load an example.
- Press "Release from top", "Reset" to start, reset or change what is happening.
- Where you see a glowing handle, object, weight or atom, drag it with your mouse or finger. Everything responds in real time.
- Watch the readouts and graphs update as you experiment, and compare what you see with the key ideas below.
Things to try
- Press Ice, then Rubber. Which surface lets the block slide at 20 degrees?
- Drag the glowing end of the ramp until the block just starts to slide, then compare the angle with arctan(mu s).
- Grab the block, flick it up the slope, and watch friction bring it back down.
- Turn on Components to see mg sin(theta) and mg cos(theta) as dashed arrows.
Key ideas you can learn
- Weight splits into mg sin θ along the ramp and mg cos θ into it.
- The block slides once tan θ is greater than the static friction coefficient.
- Acceleration while sliding is g (sin θ − μk cos θ).
Where this is used in the real world
Ramps, wheelchair access, loading docks, roads and roller coasters all use inclined-plane physics. Engineers choose slopes so vehicles and people can move safely.
Who is this simulation for?
Physics students in middle school, high school and first-year university, teachers who want a quick demonstration for the projector, and anyone revising for exams. It works well for flipped classrooms because students can explore before the lesson.
For teachers: project it on the board, let students predict what will happen, then run it together. For students: change one thing at a time and write down what changes.
Frequently asked questions
At what angle does a block start to slide?
When tan θ = μs, so the critical angle is arctan(μs). Steeper than that and static friction can no longer hold the block.
Why is the normal force smaller on a steeper ramp?
Only the component of weight perpendicular to the surface, mg cos θ, is pushed into the ramp, and it shrinks as the angle grows.
Is the Inclined Plane Simulator free to use?
Yes. It is completely free, with no signup, no download and no ads inside the simulation. It runs in your web browser.
Does the Inclined Plane Simulator work on a phone or tablet?
Yes. It uses touch as well as the mouse, so you can drag objects with your finger. A larger screen makes the controls easier to see.