Explain that ` friction is a necessary evil` follow 7 answers 7 why is friction a necessary evil are socks a necessary evil answer questions. This video explains why friction is called a necessary evil it shows the application of different types of frictions in daily life and also point out the in. Friction is a necessary evil because:- a) it can't be completely avoidedb) it is actually useful in many cases. Friction is a necessary evil acting both as friend and foe what we are looking for, friction is a necessary evil essay name a specific example of how the applicants are evaluated. Friction is a necessary evil without friction, we cannot walk, hold articles, the brakes of automobiles do not work, and the power of a motor cannot be transferred to a grinding machine.
Friction - chapter wise cbse solved question and answer based on ncert long q&a: q1: explain why friction is a necessary evil view answer. Free essays on friction is a necessary evil get help with your writing 1 through 30. So lets see how friction is a necessary evil what is friction friction is a force which acts along the common surface of two objects when one object tends to move or moves actually with respect to the other.
Friction is proportional to the weight of the body that is moving and it is an opposing force it always acts opposite to the motion of the body that is , if you pull a,heavy table right side, friction will oppose the motion and act towards left side. Friction is called a necessary evil because it wears out the materials be it screws, ball bearing or soles of shoes this wear and tear increases the maintenance cost of the things. 3friction causes wear and tear of the soles of shoes 4friction causes the damage of parts of machines and equipments which have to face the force of friction thus friction is a neccessary evil. Friction is usually called a necessary evil it means that it is essential in games and sports without friction, we cannot give a better performace in the field of sports. The friction between the sand paper and the metal sheet is very large as compared to that between the ordinary paper and metal sheet the sand paper is able to remove the outer dull layer from the metal sheet more effectively.
Friction helps a mouse to work we use friction to help us grip this means that our shoes grip the floor, so we don't fall over yet is a necessary evil as due to friction only our shoes get worn out. Free essays on friction is a necessary evil through the energy that is wasted for friction mainly appears as heat energy not only that energy is converted to heat due to friction, but also the parts of an engine may be overheated. A necessary evil means that friction has advantages as well as disadvantages so it called as necessary evil advantages of friction are its helps us to walk to write . Class 8 physics friction: friction - a necessary evil (i) desirable friction - grooves on tyres (ii) undesirable friction - worn out soles desirable friction.
Friction as a necessary evil- authorstream presentation types of friction : types of friction static friction limiting friction dynamic friction rolling friction the force of friction called into play which does not allow two surfaces to slide upon one another . 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. What is a 'necessary evil' why is friction a necessary evil is evil necessary why is inflation a necessary evil are there any good examples of necessary evils.
Yes friction us a necessary evil because it cause wear and tear, heating of the particles , on other hand it help us to walk , we can reduce friction by using ball bearing s and roller bearings sometime and by using lubricants always. Friction although is necessary, can be excessive at times most machines require repair and maintenance because of the frictional force the friction between parts over time is responsible for a majority of the wear and tear in a machine.
Essays of science on friction is necessary evil “facebook is a necessary evil” discussfacebook in simple terms can be defined as a social networking website that enables around a billion people worldwide to connect with each other via the internet. Friction, essay on friction is a necessary evil, science friction as a necessary evil- authorstream presentation i refused to 74 how to write a winning scholarship essay my father, who is friction is a necessary evil essay not true. The friction or frictional drive is an awfully primary thing in our existence when you consider that if it will be no longer there then it might be very detrimental factor for us due to the fact that if there shall be no friction then a moving object with out brakes could be in movement ever.