centripetal force and centrifugal force easy concepts
|centripetal force and centrifugal force easy concepts|
any particle of the world do circular motion its velocity changes every time due to change in direction whether its speed is constant or speed may change but condition for circular motion its velocity direction always be change its magnitude may change or may not change but direction always be change and we know that due to change in velocity acceleration is created hence it is clear that if body is doing circular motion then acceleration is there and we know that due to change in velocity direction acceleration is created and this is called centripetal acceleration and its direction is always towards the center of the circle along the radius it is denoted as a𝒸 in previous post we have already studies formula for a𝒸 = v²/r = r𝛚² where v is tangential velocity r is radius and 𝛚 is angular velocity now important point can you tell me which quantity create acceleration answer is force create acceleration or acceleration create force this is just like question which one first came on the Earth hen or egg hence the correct answer is force create acceleration because when we apply force then body start accelerate and due to acceleration velocity change hence in circular motion if centripetal acceleration is there so it is clear that centripetal force created centripetal acceleration i hope that you should not have any doubt about centripetal force concept now and this is vector quantity hence it has direction so from Newton’s second law we can write
F = ma put here a = a𝒸 = v²/r = r𝛚² so F𝒸 = mv²/r or F𝒸 = mr𝛚²
so whenever there is circular motion anywhere in the world there may be a centripetal force but wait and wait there is no any centripetal force existence in the world this is truth you can refer my previous post for different forces in the world you will get here all force in the world no any force name centripetal force then you will think what is this and which is centripetal force ? then answer is actually some other force made centripetal force or some other force which behaves as centripetal force for example a bob is tied in a string and rotate the bob with hand the bob will rotate in a circular path a tension will develop in the string towards the center this tension is called centripetal force hence its actual definition is “the net force towards the center is called centripetal force” very important point note is the resultant force towards the center is given the name centripetal force take other example Earth and Moon we know that Moon rotate around Earth means Earth attract Moon with gravitational force this gravitation force towards the earth will become centripetal force you can’t apply a new force name as centripetal force the net resultant any force towards the center will be given name as centripetal force now question arises is this force is imaginary or real correct answer is this is real force if it will be imaginary then no any body or particle can do circular motion actually we have made the concept that the net force acting towards the center given name as centripetal force i hope now your concept is clear for this force see below some question.