Question

a engine pulls a train 1 km over a level track. Calculate the work done by thetrain given that the frictional resistance is 8 10^5 n

Answer 1

Answer:

Given, frictional force, F=5×10

5

N ;

Displacement of the train, s=1km=1000m

Work done by the train against frictional force,

W=F×s=(5×10

5

)×(1000)=5×10

8

J

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