Briefcase with flywheel inside

Back to 1Q - Rotational Dynamics
PIRA index: 1Q50.40

Description

A spinning disc hidden inside a briefcase is spun rapidly. The briefcase is then rotated slowly to show how it responds to the angular momentum of the disc. The disc is also known as a flywheel.

Equipment

• briefcase
• cordless drill with drill bit

Instructions

Use the drill to rapidly rotate the flywheel hidden inside the briefcase. Hand the briefcase to a student and have the student rotate it back and forth and demonstrate its dependence on angular momentum.

Keywords

flywheel, briefcase, drill

Images & Movies

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  Figure1

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