Physics · Lesson Worlds

Friction: interactive science lab

Give a block the same push on different surfaces and prove that friction is what steals the motion.

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What will you learn?

Rougher contact, more friction, shorter slide. The push can be the same — the surface decides how far you go.

How does the lab work?

Observe the simulation, make a prediction, change a variable, run the experiment, and explain the result. Finish with a challenge that tests your understanding.

You can change: Friction. Compare what happens and connect the result to the scientific explanation.

Try a comparison in Friction

Start with the lab’s initial settings. Choose one control below, predict the result, and change that control while keeping the others fixed. Record the setting and what you observe before making a second change.

Friction: the lab starts at 0.4; its available range is 0.05–0.85.

For a named starting condition, try Ice, Wood, Rubber. A preset can change several settings: check the controls before treating two presets as a one-variable comparison.

Questions to discuss during the activity

Watch what happens. The push starts it. Something on the table steals the motion. Watch the block slide on wood, then stop.
Name the cause. Friction is the grip between two surfaces. A bigger grip steals speed faster, so the block stops sooner. Ice grips less than wood. Rubber grips more. Friction is a drag between surfaces.
Change something. Lower friction toward ice and the same push should carry farther. Change friction, then push.
Guess before you run. If we set the table to ice (μ ≈ 0.05), the block will… Guess what will happen, then run to check.

After your comparison, explain how the observations connect to this idea: Rougher contact, more friction, shorter slide. The push can be the same — the surface decides how far you go. Name one condition you held fixed and one feature of the real world this model simplifies. A completed run is a starting point for discussion, rather than proof of mastery.

Who is it for?

Curious learners exploring physics. A parent or teacher can help younger learners read the instructions and discuss the results. Choose by topic and prior knowledge rather than a fixed grade level.

Is this lab free?

Yes. This interactive lab is free without signing in or a paid membership.

No app download is needed; interactive play requires JavaScript and a modern browser.

Use this activity with a learner

Families and educators · choose by prior knowledge

Learning goal: Rougher contact, more friction, shorter slide. The push can be the same — the surface decides how far you go.

Before you begin: Read the controls for Friction. Make one prediction before changing a setting.

Check understanding: Ask for one observation, the evidence that supports it, and a question to investigate next.

A simulation simplifies the real world. Explain which conditions stayed fixed; a successful run alone does not demonstrate mastery.

Compare friction across surfaces: prediction, evidence, and follow-up

Share Friction with your family or class. No account is needed to open the free resource.

Activity and guide by Lesson Worlds. About the platform.

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