Define and explain centrifugal or pseudo force

Ans :

                                                         

Hello dear friends , did you know that , what is centrifugal force ? .

So let's know about and define this , 

Centrifugal force : The force acting on a particle performing uniform circular motion (U.C.M) which is along the radius and directed away from centre of circle is called as or known as centrifugal force .

The magnitude of centrifugal force is same as that of centripetal force , but it act in a opposite direction . 

So let's learn in detail about this centrifugal force : 

i) The uniform circular motion (U.C.M) is an accelerated motion . Therefore , when a particle performing uniform circular motion (U.C.M) is in an accelerated ( non-inertial ) frame of reference .

ii) In the non-inertial frame of reference , an imaginary force or we can say that in other words that pseudo force is to be considered in order to apply Newton's laws of motion .

iii) The magnitude of this pseudo force or we can say that in other words that centrifugal force , is same as that of centripetal force , but its direction is opposite to that of centripetal force . Therefore , this pseudo force is called as or known as centrifugal force .

iv) Let consider m is the mass of the particle performing uniform circular motion (U.C.M) , than centrifugal force experienced by the body is given by , 

F (CF)  =  mv^2 / r

But  v  =  rw  

Therefore  F (CF)  =  mrw^2

v) In the vector form ,

F (CF)  =  mw^2 r

Therefore  F (CF)  =  mv^2 ro / r

Where as  ro = unit vector in the direction of r .

* So here you think , why we called centrifugal force is called as or known as pseudo force ,

So let's learn more about this concept in simple in manner : 

a) The centrifugal force , whose origin is not defined due to the known natural interaction is called as pseudo force or we can say that centrifugal force .

b) Here the known natural interaction are like as , gravitational force , electromagnetic force , nuclear force , frictional force , etc these are the known natural interaction of this pseudo force or we can say that centrifugal force .

c) The Centrifugal force or we can say that pseudo force is directed opposite to the direction of accelerated frame of reference .

d) The centrifugal force or we can say that pseudo force is a fictitious force , which arises due to the acceleration of the frame of reference . Therefore , it is called as or known as pseudo force .

* Let's we will discuss about application of centrifugal force in our day to day routine life .

i) So here we take a first example , when a bus in motion or in a movement takes a sudden turn towards left , the passenger in the bus experience an outward push to the right . This is due to happen by the centrifugal force acting on the passenger .

ii) So let's take a second example , a bucket full of water is rotated in a vertical circle at a particular speed , so that the water does not fall . This is because of , weight of water is balanced by centrifugal force acting on it .

iii) So here we take the third example of this centrifugal force , the children sitting in merry-go-round experience an outward pull as merry-go-round rotates about it's vertical axis. This is due to happen by the centrifugal force acting on the children .

iv) So here we take fourth example on the centrifugal force , a coin kept slightly away from the axis of rotation of turn table moves away from the axis of rotation as the speed (acceleration) of rotation of turn table increases or rises . This is due to centrifugal force acting on it .

v) The bulging of earth at the equator and flattening at the poles is due to centrifugal force acting on it .

vi) The drier in washing machine consist of a cylindrical vessel with perforated walls . As the cylindrical vessel is rotating fast , centrifugal or pseudo force acts on wet clothes . 

This centrifugal force , out water through perforations thereby drying wet cloth quickly .

vii) The centrifuge works on the principle of centrifugal force or we can say that pseudo force . In the centrifuge , a test tube containing liquid , along with suspended particle is whirled in a horizontal circle . The denser particles are acted upon by the centrifugal force , hence they get accumulated at bottom which is on outside while rotating .

So we hope you understand this concept or phenomena of centrifugal force or we can say that pseudo force well n well .