A train is moving horizontally on railway along a straight line at constant speed.is any force acting on it?If not, why is the
fuel required to run it?
Answers
Answer ( to the point ) :
Yes , there is a force acting on the body .
The force is called the frictional force . The fuel is required to provide energy to the train so that it can overcome the frictional force .
Explanation with info :
↪ Frictional force is a force which is generated when two bodies are in contact with each other and they collide or slide with each other .
↪ It is an example of contact force which opposes the motion of any object .
↪ If there was no fuel provided in the train , then the train will be acted upon by the frictional force which will oppose the train's motion .
↪ Therefore the frictional force will not enable the train to be in motion forever and it will try to make the train stop .
↪ Hence there must be an external energy supplied to the train so that it can get past the frictional force .
↪ Thus fuel is required for a train to run .