The minute hand of a wall clock is 10 cm long. Find its displacement and
the distance covered from 10 am to 10:30 am.
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Answer:
Length of the minute hand l = 10cm.
From 10 am to 10:30 am, the tip of the minute hand moves to diametrically opposite point on the clock.
Thus, Displacement = Diameter AOB = 2l = 20 cm
And, Total distance covered by the minute hand = (1/2) circumference = arc (ACB) =
πr=22/7*10cm
=220/7
=31.43cm
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