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  4. A train of weight 107 N is running on a level track with uniform speed of 36 kmph. The frictional force is 0.5 kg wt per quintal. If a=10 ms -2, power of engine is

Q. A train of weight is running on a level track with uniform speed of . The frictional force is wt per quintal. If , power of engine is

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Solution:

Weight of train,
mass of train,
friction


Power,

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