Is embedding the buoyancy simulator free?

Yes. It is free to embed on any site, with no account, no API key and no usage limits. The whole simulation runs in your visitor’s own browser, so there is no server cost — we only ask that you keep the small "Buoyancy Simulator by LK Forge" credit line that comes with the embed code.

What can visitors do with the embedded simulator?

They can set the density of a block and pick the fluid — oil, water, seawater, glycerin or mercury — then watch the block settle at its floating level or sink to the bottom. They can also drag the block under the surface and release it to watch it bob back. A live panel shows the weight, the buoyant force, the submerged percentage and whether it floats or sinks.

Does the embed teach Archimedes' principle?

Yes. The buoyant force is computed as the weight of the displaced fluid, ρ_fluid times g times the submerged volume, and shown as an upward arrow against the downward weight arrow. Students can see a floating block settle at a submerged fraction equal to its density divided by the fluid's, and watch a denser block sink because even fully under it cannot displace its own weight.

What iframe height should I use, especially on mobile?

The snippet ships with height="820", which is tall enough that the tank, the sliders and the readouts all fit without clipping even on a narrow phone where everything stacks into a single column. On a wider page the widget simply centres within its max-width of 560px. If you want it shorter you can lower the height, but 820 is the safe default across screen sizes.

Where can I embed it — WordPress, Wix, Squarespace, Notion?

Anywhere you can add HTML, because it is a standard iframe. In WordPress use a Custom HTML block; in Squarespace a Code/Embed block; in Wix an Embed HTML element; in Ghost an HTML card; in Notion paste the /embed/buoyancy/ URL as an embed. On a plain HTML page or an intranet, paste the snippet straight into the markup.

Does the embedded simulator track visitors or set cookies?

No. Everything runs locally in the visitor’s browser — nothing is uploaded. The embed sets no tracking cookies and sends no analytics, so it is safe to place on a privacy-sensitive site, an intranet, or a page for students.

Widgets

How to Add a Buoyancy Simulator to Your Website

LK Forge · 4 min read · Updated September 2026

You can add a full buoyancy simulator to any website, blog, or classroom page with a single line of code — free, with no sign-up, no plugin, and no script to install. Visitors drop a block into a fluid and watch density decide whether it floats or sinks. This guide covers the fastest way to embed the Buoyancy Simulator, what it teaches, and where it works.

The quickest way: paste one embed snippet

An embed is just an <iframe> that loads the simulator from lkforge.com, plus a small credit line. Copy this into your page’s HTML where you want the widget to appear:

<iframe src="https://lkforge.com/embed/buoyancy/"
        width="100%" height="820" loading="lazy"
        style="border:0;max-width:560px"
        title="Buoyancy Simulator by LK Forge"></iframe>
<p><a href="https://lkforge.com/tools/physics/buoyancy/">Buoyancy Simulator</a>
   by <a href="https://lkforge.com/">LK Forge</a></p>

The <iframe> is the live simulator; the <p> underneath is a plain credit link. Keep that line — the visible link is what keeps the widget free to embed. You can also copy this exact code straight from the LK Forge widget gallery.

What the widget shows

The simulator opens with a block already settling in water, so a visitor sees it float immediately and can then take control:

Object density: slide it across the fluid's density to flip between floating and sinking.
Fluid: pick oil, water, seawater, glycerin or mercury and watch the block ride higher or lower.
Drag to test: pull the block under the surface and release it to watch it bob back to equilibrium.
Live readouts: the weight, the buoyant force, the submerged percentage, and whether it floats or sinks.

Pick the right height

The snippet uses height="820", which fits the tank, the sliders and the readouts without clipping even on a narrow phone, where they stack into one column. On a wider page the widget centres within its max-width:560px. That single height works across screen sizes, so there is nothing to tweak for mobile.

Where it works

Because it is a standard iframe, the embed works anywhere you can add HTML:

WordPress: add a Custom HTML block and paste the snippet.
Squarespace: use a Code / Embed block.
Wix: add an Embed HTML / iframe element.
Ghost: insert an HTML card.
Notion: paste the /embed/buoyancy/ URL and choose "Create embed".
Plain HTML, an intranet, or a lesson page: paste the snippet straight into the markup.

That’s the whole job. Copy the embed code from the widget gallery and paste it wherever a physics lesson or a blog post on floating, sinking, density or Archimedes' principle needs a block students can actually drop in.

Grab the embed code from the LK Forge widget gallery — free, no sign-up.

Open the Buoyancy Simulator

Frequently asked questions

Is embedding the buoyancy simulator free?: Yes. It is free to embed on any site, with no account, no API key and no usage limits. The whole simulation runs in your visitor’s own browser, so there is no server cost — we only ask that you keep the small "Buoyancy Simulator by LK Forge" credit line that comes with the embed code.
What can visitors do with the embedded simulator?: They can set the density of a block and pick the fluid — oil, water, seawater, glycerin or mercury — then watch the block settle at its floating level or sink to the bottom. They can also drag the block under the surface and release it to watch it bob back. A live panel shows the weight, the buoyant force, the submerged percentage and whether it floats or sinks.
Does the embed teach Archimedes' principle?: Yes. The buoyant force is computed as the weight of the displaced fluid, ρ_fluid times g times the submerged volume, and shown as an upward arrow against the downward weight arrow. Students can see a floating block settle at a submerged fraction equal to its density divided by the fluid's, and watch a denser block sink because even fully under it cannot displace its own weight.
What iframe height should I use, especially on mobile?: The snippet ships with height="820", which is tall enough that the tank, the sliders and the readouts all fit without clipping even on a narrow phone where everything stacks into a single column. On a wider page the widget simply centres within its max-width of 560px. If you want it shorter you can lower the height, but 820 is the safe default across screen sizes.
Where can I embed it — WordPress, Wix, Squarespace, Notion?: Anywhere you can add HTML, because it is a standard iframe. In WordPress use a Custom HTML block; in Squarespace a Code/Embed block; in Wix an Embed HTML element; in Ghost an HTML card; in Notion paste the /embed/buoyancy/ URL as an embed. On a plain HTML page or an intranet, paste the snippet straight into the markup.
Does the embedded simulator track visitors or set cookies?: No. Everything runs locally in the visitor’s browser — nothing is uploaded. The embed sets no tracking cookies and sends no analytics, so it is safe to place on a privacy-sensitive site, an intranet, or a page for students.