Question

a wheel of diameter in 14 cm makes 3000 revolution per min find speed in m/sec.

Answer 1

Speed = (Distance covered) / Time Taken

Revolutions per minute = 3000 / 60 = 50 revolutions per second
Distance covered in one revolution = Circumference of wheel
= 2$\pi$r
= (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

Answer 2

Answer:

Step-by-step explanation:

As we know that the formula of average speed is

Total distance covered/Total time taken

Revolution of wheel=3000/minute

So we can convert 3000/minute into

second by dividing with 60

=(3000/60)m/sec

=50 m/sec

The distance covered by wheel in one revolution=The circumference of wheel

Formula of circumference is

π×diameter=2π×radius

circumference=2πradius

=(2*22*7)/7

=44cm=44/100=0.44meter

=Total distance covered in a second by wheel=0.44×100=22 metre/second