Question

a railway traun is travelling on acurve of 1500 m radius at the rate of 66km/hr through what angle it will turn in 20 seconds

Answer 1

Explanation:

Given - The radius of the circular curve = 1500 m

Speed of the train = 66 km per hour

Speed of the train converted to m/second = (66*1000)/3600

⇒ 66000/3600

Speed of the train = 18.333 m per second

In 1 second, distance is covered = 18.333 m

In 20 seconds, distance is covered = 18.333*20

= 366.66m

Angle turned by the train moving on the circular curve in 20 seconds

= arc it made by moving on circular curve/radius of the circular curve

⇒ 366.66/1500

= 0.24444

Hence, the trained turned by 0.24444 Radian (angular measurement) in 20 seconds

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