A Puck on a Frictionless Air Hockey Table Has a Mass

question 32

Multiple Choice

A puck on a frictionless air hockey table has a mass of 5.0 kg and is attached to a cord passing through a hole in the surface as in the figure. The puck is revolving at a distance 2.0 m from the hole with an angular velocity of 3.0 rad/s. The angular momentum of the puck (in kg.m²/s) is:

• A)80
• B)20
• C)30
• D)60
• E)50

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Definitions:

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