Advantages of Friction:
Friction is desirable for a number of purposes and in these cases we have to increase the friction. For example sand is thrown on the up hill railway track after rain.
The threading on the car tyres is done to provide necessary frictional force between the tyre and the road to enable the car to move smoothly. Friction enables us to walk on the ground.
Disadvantages of Friction:
The main disadvantage of friction is that a large amount of energy in machines is wasted due to it, which have to do much useless work in overcoming it. Moreover, friction leads to wear and tear on moving parts of machines.
No comments:
Post a Comment