# Five Things To Know About Centripetal Force

Content List

### What is the centripetal force?

Centripetal force is defined as the force that acts on the object that is rotating in a circular path. The force acts in the direction towards the center of the circle. Centripetal force is responsible for an object to continue its motion in a circular path.

### Examples of centripetal force

Following is the list of centripetal force example:

• The other example of centripetal force is tying a rock to one end of the string and the other end with a finger. Now start rotating this in a circular motion keeping it in the horizontal plane. The mechanism behind this is that the motion of stone is at a right angle with respect to gravity and that’s the reason why the stone doesn’t fall.
• Electrons orbit the nucleus in an atom. The reason why the electrons orbit around the nucleus in an atom is because of centripetal force on the electron.
• A car taking a circular bend. The reason why a car moves with such ease in a circular bend is because the centripetal force is acting providing the frictional force between the tires and the roads.
• Satellite revolving around the earth. The gravitational force between the earth and the satellite supplies the centripetal force for the revolution of a satellite around the earth.

### What is the formula of centripetal force?

Following is the formula of centripetal force:

F = mω2R

Where,

• F is the centripetal force
• m is the mass of the object
• ω is the angular velocity
• R is the radius of the circular path.

Following are the factors related to the nomenclature used in the formula:

• To maintain a circular motion, the mass of the object should be more, the angular velocity less and smaller radius of circular motion.
• If R is high and angular velocity less, the object can still be in a circular path.
• If R is small, angular velocity will be higher to compensate R so as to generate the required centripetal force.

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