EXAMPLE 1.2: The minute hand of a wall clock is 20 cm automobile. long. Find (a) the distance covered, and (b) thedisplacement of minute hand of the clock from 9:00 am to 9:30 am.

EXAMPLE 1.2: The minute hand of a wall clock is 20 cm automobile. lo

1.	EXAMPLE 1.2: The minute hand of a wall clock is 20 cm automobile. long. Find (a) the distance covered, and (b) thedisplacement of minute hand of the clock from 9:00 am to 9:30 am.
Answer» DISTANCE covered by the minute HAND is 62.8 cm.(b) DISPLACEMENT of the minute hand = 40 cm Explanation:Length of minute hand=20 cmfrom 9:00 to 9:30 it will form a semicircle.distance=circumference of SEMI circle=2πr/2==62.8 cmdisplacement=diameter of semicirclediameter=2×radius= 2×20=40 cm

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EXAMPLE 1.2: The minute hand of a wall clock is 20 cm automobile. long. Find (a) the distance covered, and (b) thedisplacement of minute hand of the clock from 9:00 am to 9:30 am.​

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EXAMPLE 1.2: The minute hand of a wall clock is 20 cm automobile. long. Find (a) the distance covered, and (b) thedisplacement of minute hand of the clock from 9:00 am to 9:30 am.