EXAMPLE 1.2: The minute hand of a wall clock is 20 cm automobile.
long. Find (a) the distance covered, and (b) the
displacement of minute hand of the clock from 9:00 am to 9:30 am.
Answers
Answered by
4
(a) the distance covered by the minute hand is 62.8 cm.
(b) displacement of the minute hand = 40 cm
Explanation:
Length of minute hand=20 cm
from 9:00 to 9:30 it will form a semicircle.
distance=circumference of semi circle=2πr/2=
=62.8 cm
displacement=diameter of semicircle
diameter=2×radius= 2×20=40 cm
Similar questions