A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?

Given Data

• Train speed = 72 km/hr
• Platform length = 250 m
• Time to cross the platform = 26 s
• Required: length of the goods train

Step 1: Convert speed to m/s72 km/hr = 72 × (5/18) = 20 m/s

Step 2: Compute total distance covered while crossing the platformDistance = speed × time = 20 × 26 = 520 m

Step 3: Extract the train lengthTotal distance = train length + platform lengthTrain length = 520 − 250 = 270 m

Checks & Common Pitfalls

• Add lengths when a train crosses a platform.
• Do the km/hr → m/s conversion before multiplying by seconds.

Final AnswerThe length of the goods train is 270 m.