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Rhythm & Pendulum: The Physics of a Metronome

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Grades 3-545 minSource: Creative Dad Company

Build a simple pendulum, measure how string length changes its swing rate, and compose a short rhythm pattern based on the data.

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Prep: 10 minActivity: 45 min1 session~$2/groupOne table or a clear section of floorBeginner-friendly

Setup

Place common or recycled supplies for Rhythm & Pendulum: The Physics of a Metronome on one work surface and choose a safe area for the test. Read the four activity directions aloud; drawings, paper models, and household substitutes may replace specialized materials, and no digital tool is required.

Activity

  1. Tie a washer to three different string lengths (short, medium, long).
  2. Time 10 swings for each length and calculate swings per minute.
  3. Graph string length versus swing speed.
  4. Use the fastest and slowest pendulum speeds as tempos for a two-part drum rhythm.

Done when: The group produces the Rhythm & Pendulum: The Physics of a Metronome solution, completes the described test, makes the revision called for by the evidence, and supports its final explanation with an observed or measured result.

Materials

String, washers, a stopwatch, a ruler, a hand drum or tambourine

Shown for the Quick Start version — switch tabs above to see what changes.

Disclosure: Materials links below go to Amazon. As an Amazon Associate, Creative Dad Company earns from qualifying purchases at no extra cost to you.

Steps

  1. Tie a washer to three different string lengths (short, medium, long).
  2. Time 10 swings for each length and calculate swings per minute.
  3. Graph string length versus swing speed.
  4. Use the fastest and slowest pendulum speeds as tempos for a two-part drum rhythm.

Standards it satisfies

  • NGSS · 4-PS3-2

    Make observations to provide evidence that energy can be transferred from place to place by sound, light, heat, and electric currents.

  • Florida · SC.3.P.10.2

    Recognize that energy has the ability to cause motion or create change.

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