Question
Mon December 31, 2012 By:

what is the magnitude of angular displacement of the second hand of a clock after 30 sec?

Expert Reply
Mon December 31, 2012
 The second hand of a clock completes one full rotation of 360 degrees or 2 pi radians in 60 seconds.
hence in 30 sec, its angular displacement will be 180 degrees or pi radians.
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