A 8000 kg engine pulls a …
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Sia ? 4 years, 6 months ago
The external force is only applied to waggon 1 directly. On the last four waggons, the net force is equal to the force added to waggon 2 by waggon 1.
Let us consider the acceleration of the wagons is aw
35000 = 5m × aw
aw = 35000/5m
aw = 35000/(5 × 2000)
aw = 3.5 m/s2
Then the mass of the last four wagons can be considered as mw
mw = 2000 × 4
mw = 8000 kg
Now let us calculate the net force on the last four wagons
F’ = mw× aw
F’ = 8000 × 3.5
F’ = 28000 N
∴ The force of wagon-1 on the wagon-2 is 28000N.
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