emilyangelaruiz emilyangelaruiz

17-01-2023
Physics

contestada

A figure skater begins spinning counterclockwise at an angular speed of 3.4 π rad/s. During a 4.5 s interval, she slowly pulls her arms
inward and finally spins at 8.1 π rad/s.
What is her average angular acceleration
during this time interval?
Answer in units of rad/s^2

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