a rain of mass 4000 metric tons is moving with a velocity of 18KMPH. with the application of a force, its velocities changes to 'v' in 2 mins. if the power of the engine is 10MW, the value of 'v' is? (ans : 90)
Please find below the solution to the asked query:
mass of the train ; initial velocity of the train ; power of the engine is and The time period is . Let the final velocity of the train is . Therefore, according to the conservation of energy,
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