Question

8000 kg engine pulls A train of 5 begin each of 2000 kilogram and horizontal check if the engine exerts a force of 40000 Newton and the track offers a fiction of force of 5000 Newton then calculate the acceleration of the train

Answer 1

mass of engine=8000kg
mass of wagons=5*2000=10000kg
net accelerating force = 40000-5000=3500N
total mass of train = total mass of wagons+mass of engine=10000+8000=18000kg
from F=ma
35000N=18000kg*a
a=35000N\18000kg
a=1.94m s