Question

The radius of A wheel of train is 0.35 meter. If it makes 450 revolutions per minute ,let us calculate the velocity of the train per hour

Answer 1

Step-by-step explanation:

Hello !

The radius of the wheel (r) = 0.35m

No. of revolutions in one minute = 450

no. of revolutions per second (n) = 450/60 =15/2revolutions

The distance travelled in one second (Speed) = 2πr × 15/2 = 47.14 × 15/2 = 353.55 m/sec

Speed in km/h = 353.55× 18/5 =  1272.78 km/h 

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