Answer
0.05 seconds
Work Step by Step
The period is the time it takes to complete one revolution. We know that the blade completes 1200 revolutions in one minute, therefore, one revolution takes 1minute/1200 = 0.05 seconds to complete
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 4 - Motion in Two and Three Dimensions - Problems - Page 88: 58d
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