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A 8000kg engine pulls a train of 5 wagons, each of 2000kg along a horizontal track.if the engine exerts a force of 40000N and the track offers a friction force of 5000N, then calculate.a)the net accelerating forceb)the acceleration of the trainc)the force of wagon 1 on wagon 2. |
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Answer» Mass of the engine = 8000 kg Mass of each wagon = 2000 kg, Np. of wagons = 5 Total mass of train = 8000+2000×5= 18000 kg Force, F = 40000 N Track resistance , R = 5000 N Total accelerating force = F −R =40000−5000=35000 N Let acceleration = x m/s² Acceleration , = Accelerating force / mass x=35000/18000= 35/18=1.94 m/s² FRICTIONAL resistance of 4 wagons = 5000×(2000×4)/18000 =2222 .22 N Accelerating force on 4 wagons =2000×4×1.944 =15552 N Hence total force exertred by wagon on wagon 2= Accelerating force +Frictional resistance =2222 .22 +15552=17774.22 N Total force REQUIRED to produce acc hope it works plz brainlist me plzzzzzzzzzzzzzz |
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