Please answer this question,
A 8000 kg engine pulls a train of
5 wagons , each of 2000 kg along a horizontal track . If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate :
(a) the net accelerating force
(b) the acceleration of the train.
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applied force=40000 Nfrictional force=5000Nnet acceleration force+40000 - 5000=35000mass of 1 wagon=2000kgso,total mass of 5 wagon =2000*5=10000kgacceleration force=35000NF=M*A35000=10000*AA=35000/10000=3.5 m/s squarethere,acceleration of train =3.5m/s squ.
Astha1805:
but where is the weight of engine that is 8000 kg.
the weight of engine itself is 8000kg
but here it's not added
read the question .it is given that: a 8000 kg engine pulls ..... that means the weight of engine is 8000kg.
do you have any other problem or you are not able to understand the solution.you can ask
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