An engine pulls a train 1km over a level track.Calculate the work done by a train given that frictional resistance is 5*100000N
5*10^8 J
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To calculate the work done by the train, we need to determine the net force acting on the train and multiply it by the distance the train traveled.
The net force acting on the train is equal to the force generated by the engine minus the frictional resistance. So, let's determine the force generated by the engine first.
The work done by a force is calculated using the formula:
Work = Force * Distance
We know the distance the train travels is 1 km, which is equal to 1000 meters. Let's convert it to the SI unit of meters.
Distance = 1000 meters
To calculate the force generated by the engine, we need to know the force required to overcome the frictional resistance. In this case, the frictional resistance is given as 5 * 100000 N.
Frictional Resistance = 5 * 100000 N
Since the engine pulls the train, the force generated by the engine will be equal to the frictional resistance plus any additional force required to accelerate the train, if applicable. However, in this scenario, we are assuming there is no additional force required to accelerate the train.
Force Generated by Engine = Frictional Resistance = 5 * 100000 N
Now, we can calculate the work done by the train:
Work = Force * Distance
Work = (Force Generated by Engine) * Distance
Work = (5 * 100000 N) * 1000 meters
Work = 500000 N * meters
Therefore, the work done by the train is 500,000 N * meters.