Question
Why are railway tracks laid on large-sized concrete sleepers? Explain.
✓
Answer
When the train passes over a railway track, the whole weight of the train acts on the railway line beneath it. Due to large sized concrete sleepers, the force of this weight spreads out over a large area, thereby reducing the pressure on the ground. As a result, the railway track can bear it.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What are conducting elements of xylem?
Can a body have mass but no weight? Give reasons for your answer.
What is the main function of each of the following organelles?
- Ribosome.
- Cell wall.
Differentiate the following activities on the basis of voluntary (V) or involuntary (IV) muscles.
Movement of chocolate in your intestine.
Movement of chocolate in your intestine.
Predict the total number of atoms in case:
Hydrogen sulphide.
Hydrogen sulphide.
Which postulate of Dalton’s atomic theory is the result of law of conservation of mass given by Lavoisier?
Explain, how sonic booms are produced?
Two persons manage to push a motorcar of mass 1200kg at a uniform velocity along a level road. The same motorcar can be pushed by three persons to produce an acceleration of 0.2m s-2. With what force does each person push the motorcar? (Assume that all persons push the motorcar with the same muscular effort.)
The troops (soldiers) equipped to be dropped by parachutes from an aircraft are called paratroopers. Why do paratroopers roll on landing?
A motorcyclist starts from rest and reaches a speed of 6m/s after travelling with uniform acceleration for 3s. What is his acceleration?