A pendulum swings through an angle of 360 and describes an arc of length 13.2 cm , then
find the length of the pendulum.
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Answer:
Angle of 360 ° makes an arc of full circle.
Therefore, arc = circumference of circle 2πr = 13.2 cm
Length of pendulum = r = 13.2/2π = (13.2x 7)/(2x22)
= 0.3 X 7 cm = 2.1 cm
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