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Ch 16: Angular MomentumWorksheetSee all chapters

# Intro to Angular Momentum

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Sections
Angular Momentum of Objects in Linear Motion
Intro to Angular Collisions
Conservation of Angular Momentum
Angular Collisions with Linear Motion
Intro to Angular Momentum
Jumping Into/Out of Moving Disc
Angular Momentum of a Point Mass
Angular Momentum & Newton's Second Law
Opening/Closing Arms on Rotating Stool
Spinning on String of Variable Length

Concept #1: Intro to Angular Momentum

Transcript

Practice: When solid sphere 4 m in diameter spins around its central axis at 120 RPM, it has 1,000 kg m2 / s in angular momentum. Calculate the sphere’s mass.

Practice: A composite disc is built from a solid disc and a concentric, thick-walled hoop, as shown below. The inner disc has mass 4 kg and radius 2 m. The outer disc (thick-walled) has mass 5 kg, inner radius 2 m, and outer radius 3 m. The two discs spin together and complete one revolution every 3 s. Calculate the system’s angular momentum about its central axis.