write a short notes on friction is evil & friend (150-200)
Answers
Hey dude,
Friction plays an important part in many everyday processes. For instance, when two objects rub together, friction causes some of the energy of motion to be converted into heat. This is why rubbing two sticks together will eventually produce a fire. This is because of friction.
One the other hand, friction is also responsible for the wear and tear on bike gears and other mechanical parts. That's why lubricants, or liquids, are often used to reduce the friction and wear and tear between moving parts.
@Adrien Marinette
Answer:
Friction is an evil: (1) Wear and tear of machinery is due to friction. (2) A large amount of power is wasted in overcoming friction and the efficiency of the machines decrease considerably. (3) Excessive friction between rotating parts of a machine producers enough heat and causes damage to the machinery.
Friction a Necessary Evil. If there is no friction between any two surfaces in contact, then the present day civilization will be no more- as we cannot even walk properly on the earth. ... So friction is necessary. But too much friction causes a heavy loss of energy, wear and tear of machinery.Uses of Friction. Although you normally hear about trying to reduce or eliminate friction, it actually has some important uses. Since friction is a resistance force that slows down or prevents motion, it is necessary in many applications where you might want to hold items or do things and prevent slipping or sliding.