what is friction??????
Answers
☆Frictional force refers to the force generated by two surfaces that contacts and slide against each other.
☆Friction is the force that resists motion when the surface of one object comes in contact with the surface of another. The mechanical advantage of a machine is reduced by friction, or in other words, the ratio of output to input is reduced because of friction. An automobile uses one-quarter of its energy on limiting the friction. Yet, it is also friction in the tires that allows the car to stay on the road and friction in the clutch that makes it possible to drive. From matches to machines to molecular structures, friction is one of the most significant phenomena in the physical world. In this article, let us discuss frictional force and its different types.
Hope it helps you out.......
Answer:
➞What is friction?
A force which acts at the surfaces of contact, when one body moves upon another body is called force of friction.
➞What are the types of friction?
There are three types of friction:
✦Static Friction:
The frictional force that comes into play when one body tends to move over the surface of another, but the actual motion has not started yet is called static friction.
✦Rolling Friction:
The frictional force that comes into play when one body is actually rolling over the surface of another body is called rolling friction.
✦Sliding Friction:
The frictional force that comes into play when one body is actually Sliding over the surface of another body is called sliding friction.
➞ Explain Friction as a boon and friction as a curse.
Force of friction brings about wear and tear in moving bodies. It produces heat and slows down a moving body. A lot of energy is wasted in overcoming friction.
However, if there were no friction, the bodies will either slip or not move. Furthermore, the bodies will not stop. Even walking on the surface of the Earth would have been impossible. Thus, we can say that friction is a necessary evil.