A train travelling at 36 kmph crosses a platform in 20 seconds and a man standing on the platform in 10 seconds. What is the length of the platform in meters?
Answers
Given :
Speed of train = 36 km/hr
= 36 × 1000 m / ( 3600 s )
= 1000 m / 100 s
= 10 m/s
Time taken to cross the platform = 20 s
Formula :
Speed = distance / time
= > distance = speed × time
= > distance = 10 m/s × 20 s
= 200 m
ANSWER:
The length of platform was 200 m
Answer:
The required length of the platform = 100 meters
Step-by-step explanation:
Speed of the train is given to be = 36 km/hr.
Changing this speed into meters per second
⇒ Speed of the train = 10 m/s.
Now, Time taken to cross the Platform = 20 seconds.
Time taken to cross the man = 10 seconds.
Also, Speed of the Train = Length of the Train/Time taken to cross the man
⇒ Length of the Train = Speed of the Train × Time taken to cross the man
⇒ Length of the train = 10 × 10
= 100 meter
Now, Length of the Train + Length of the Platform = Speed of the Train × Time taken by the Train to cross the Platform.
⇒ 100 + Length of platform = 10 × 20
⇒ 100 + Length of platform = 200
⇒ Length of platform = 200 - 100
= 100 meters
Thus, The required length of the platform = 100 meters