Q 3)  A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second?

Answers (1)

Solution
Number of revolutions made by the wheel in 1 minute = 360
\therefore Number of revolutions made by the wheel in 1 second  = \frac{360}{60} = 6   
                                                                                                          (\because 1 minute = 60 seconds)
In one revolutions wheel will cover 2\pi radian
So, in 6 revolutions it will cover =6\times 2\pi = 12\piradian 

\therefore   In 1 the second  wheel will turn 12\pi radian  

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