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A Locomotive of mass 80 tonne, hauls 11 coaches each has a mass of 20 tonne up an incline of 1 in 80. The frictional resistance to motion is 50 N/tonne . If the train accelerates from 36 to 72 km/h in a distance of 1600m, determine the :
A. The change in potential energy of the train
B. The change in kinetic energy
C. The work done against frictional resistance
D. The total mechanical energy required
11 years ago
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