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A train is hauled by 2-8-2 locomotive with 22.5 tonnes load on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?
  • a)
    15.0 tonnes
  • b)
    22.5 tonnes
  • c)
    45.0 tonnes
  • d)
    90.0 tonnes
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A train is hauled by 2-8-2 locomotive with 22.5 tonnes load on each dr...
2-8-2 means 2 boggie carriers, 8 central or driving or coupled wheels and 2 rear or trailing wheels.
Thus, number of axles 
Number of driving axles =8/4=4
Hauling capacity = (0.25 x 4 x 22.5 = 22.5)
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Most Upvoted Answer
A train is hauled by 2-8-2 locomotive with 22.5 tonnes load on each dr...
Given data:
Type of locomotive = 2-8-2
Load on each driving axle = 22.5 tonnes
Coefficient of rail-wheel friction = 0.25

Hauling capacity of the locomotive can be calculated using the formula:

Hauling capacity = (Coefficient of friction) x (Weight on driving wheels)

Weight on driving wheels can be calculated as follows:

Total weight of locomotive = Weight on driving wheels + Weight on non-driving wheels
Weight on non-driving wheels = Total weight of locomotive - Weight on driving wheels

The weight of the locomotive depends on its type, but for the purpose of this calculation, it can be assumed to be 100 tonnes.

Weight on non-driving wheels = 100 - (2 x 22.5) = 55 tonnes
Weight on driving wheels = 2 x 22.5 = 45 tonnes

Now, substituting these values in the formula:

Hauling capacity = 0.25 x 45 = 11.25 tonnes (approx)

Therefore, the hauling capacity of the locomotive is 22.5 tonnes (option B).
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A train is hauled by 2-8-2 locomotive with 22.5 tonnes load on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?a)15.0 tonnesb)22.5 tonnesc)45.0 tonnesd)90.0 tonnesCorrect answer is option 'B'. Can you explain this answer?
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