Festival Balance Beam — Will It Tip?

Festival context —Two performers stand on opposite sides of a festival riser plank balanced on a central support. Adjust how heavy each performer is and how far out each one stands. Watch the beam: does it stay balanced, or does it tip to one side? No numbers — just the balance state.

S9FE-Iva-35Grade 9 · Quarter 4Describe Conditions for Equilibrium

Festival Balance Beam — Will It Tip?

Interactive Simulator

"Two performers stand on opposite sides of a festival riser plank balanced on a central support. Adjust how heavy each performer is and how far out each one stands. Watch the beam: does it stay balanced, or does it tip to one side? No numbers — just the balance state."

FESTIVAL RISER — WILL IT TIP?

A lighter performer far out balances a heavier one close in — beam stays level.

Adjust Variables

Left performer — how heavy300

50800

Left performer — how far from center1.5

0.15

Right performer — how heavy300

50800

Right performer — how far from center1.5

0.15

Physics ReadoutsLIVE

Balance status✓ Balanced

balance_state

Community Hub — Cultural Discussion

Reflect & Connect

The festival director wants to seat a heavy honored guest on one side of an elevated platform, fairly close to the center support. Where should a lighter performer stand on the other side — close in, or far out — to keep the platform from tipping? What does this tell you about how a lighter person can still balance a heavier one?

Discuss with your class or write your response in your science journal.

Performance Task

Build a Coin Seesaw and Balance It

1Do

Balance a ruler across a round pencil at its center mark so it tips freely — a mini festival riser-plank. Place 2 identical coins stacked on one side at some distance from the pencil. On the other side, use just 1 coin and slide it in and out until the ruler sits level.

2Measure

Watch what makes it balance. Does the single coin balance the stack when it is close to the pencil, or only when you slide it farther out? Note whether the ruler tips toward the heavier side, the farther-out side, or stays level.

3Reflect

You should find the single coin must sit *farther out* to balance the two coins close in — competency S9FE-Iva-35. The rule is qualitative: a lighter load placed farther from the center can balance a heavier load placed closer in, and the beam stays level when the two sides match. This is exactly how a lighter performer can balance a heavier guest on the Cry of Jelicuon platform — no multiplication needed, just farther-out balances heavier-closer-in.

Record your measurements and reflections in your science journal.

Module Overview

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Check Your Understanding: Forces