Centrifugal Force, About Centrifugal Force, Centrifugal Force Examples, Centripetal Force vs Centrifugal Force (For CBSE, ICSE, IAS, NET, NRA 2022)

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Centrifugal Force

  • Force is required to make an object move
  • Force acts differently on objects depending on the type of motion it exhibits.
  • In case of curvilinear motion, two types of force are there, i.e.. ,
    • Centrifugal force
    • Centripetal force

About Centrifugal Force

  • If an object moving in a circle and experiences an outward force than this force is called the centrifugal force.
  • So, the force also depends on the mass of the object, the distance from the centre of the circle and the speed of rotation.
  • If the object has more mass, the force of the movement and the speed of the object will be greater.
  • If the distance is far from the centre of the circle the force of the movement will be more.
  • Definition: The apparent force, which is equal in magnitude and opposite in direction to the centripetal force, drawing a rotating object away from the center of rotation, caused by the inertia of the object.
  • Newton is unit of Centrifugal force unit.
  • The centrifugal force drives the object away from the centre. It is a fictitious force.

Calculation of Centrifugal Force

Centrifugal Force Formula is given as the negative product of mass (in kg) and tangential velocity (in meters per second) squared, divided by the radius (in meters) .

Calculation of Centrifugal Force

Where,

  • F = Centrifugal force
  • m = mass of the object
  • v = velocity or speed of the object.
  • r = radius.

Centrifugal Force Examples

  • Centrifugal Force acts on every object moving in a circular path when viewed from a rotating frame of reference.
  • Some examples of Centrifugal Force are given below.
    • Weight of an object at the poles and on the equator: If an object is weighed with a simple spring balance at one of the Earth՚s poles, there are two forces acting on the object: The Earth՚s gravity, which acts in a downward direction.
    • Stone on a string: If a stone is stunned round on a string, in a horizontal plane, the only real force acting on the stone in the horizontal plane is applied by the string. There is a force on the stone in the horizontal plane which acts toward the center.
    • Earth: The Earth constitutes a rotating reference frame because it rotates once every 23 hours and 56 minutes on its axis
    • A bike making a turn: A common experience that gives rise to the idea of a centrifugal force is encountered by passengers riding in a vehicle, such as a bike, that is changing direction.
    • Equatorial railway

Centripetal Force vs Centrifugal Force

Comparison between Centripetal and Centrifugal Force

Comparison between Centripetal and Centrifugal Force
Differences Between Centripetal and Centrifugal Force
Centrifugal ForceCentripetal Force
If an object moving in a circle and experiences an outward force than this force is called the centrifugal forceIf the object travels in a uniform speed in a circular path is called centripetal force.
The object has the direction along the centre of the circle from the centre approaching the objectThe object has the direction along the centre of the circle from the object approaching the centre.
Mud flying of a tire is one example of the centrifugal force.A satellite orbiting a planet is an example of the centripetal force.

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