Question

A wheel 14 cm in diameter makes 3000 revolution per minutes find its speed in m\sec. Math question

Answer 1

Speed = (Distance covered) / Time Taken

Revolutions per minute = 3000 / 60 = 50 revolutions per second
Distance covered in one revolution = Circumference of wheel
= 2r
= (2 * 22 * 7)/7
= 44 cm = 44/100 = 0.44m
Total distance covered in a second = 0.44 * 50 = 22 meter in a second
so the speed is 22 m/sec
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