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Question

A man running on a circular track of radius=20 m, Find the linear distance travelled by the man when he completes 5 revolutions?


A
628.4 m
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B
314.2 m
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C
157.1 m
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D
125.71 m
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Solution

The correct option is B 628.4 m
We know that,
linear distance travelled in one revolutiuon= Circumference of the circle= 2πr
for 5 revolutions =5(2πr)
                            =5(2π)(20)
                            =628.4 m
(π=3.14)

Physics

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