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This lab activity has learners create a pendulum with a one-second period.

$1 - $5 per student Ages 11 - adult 45 to 60 minutes
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In this activity, learners build a Wilberforce Pendulum, a special coupled pendulum in which energy is transferred between two modes of vibration, longitudinal ("bounce') and torsional ("twist"), on a

$10 - $20 per group Ages 11 - 18 10 to 30 minutes