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

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 =$6\times 2\pi = 12\pi$radian

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

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