'The length of the radius of one wheel of the train is 0.35 meters. If the wheel rotates 450 times in 1 minute, then how many km will the speed of the train be per hour - calculate it.
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Answer:
59.346 km/hr
Step-by-step explanation:
Radius of wheel, R=0.35m
Number of rotations per minute, n=450
Angular velocity, v = (n × 2πR)/60
=(450 × 2π × 0.35)/ 60
= 16.485 m/s
= 16.485 × (18/5) km/hr
= 59.346 km/hr
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