Question 819566
An ice skater is spinning on ice. With her arms fully extended horizontally, and one leg extended, she completes 2 revolutions per second.
I. Compute the skater;s angular speed
!!. If one of her arms is about 71cm in length from shoulder to fingers, find the linear speed of a point on her fingertip.
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{{{angular speed=2(rev/sec)*2(pi)(radians/rev)=4(pi)(radians/sec)}}}
{{{linear speed=2(rev/sec)*2(pi)71(cm/rev)=142(pi)(cm/sec)}}}