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Rev. Notes > IGCSE > Forces
 
 
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Topics
 
Force Effect of force Friction
Balanced forces Unbalanced forces Addition of forces
Newton's firts law of motion Newton's second law of motion Newton's third law of motion
Circular motion Circular motion - Examples Center of mass
Hook's law Hook's law (Elastic behaviors) Hook's law (Plastic behaviors)
Hook's law - Elastic limit Effects of applied force on the materials Moment of force
Priciple of moment of force Equilibrium Conditions of equilibrium
 

Circular motion

Moving in a circle means that the direction of motion is changing constantly.

So, if an object is moving in a circle, it follows that there must be a force acting on it to change its direction.

Therefore we can say that the direction of force is constantly changing.

In order to move an object on a circular path,the force must always be acting towards the centre of the circle.

This force which is always towards the centre of the circle is given the name of centripetal force.

This centripetal force acts perpendicularly to the direction of motion of the object at any instant.

It can be calculated by the following formula

Fc=mv2/r
F= Centripetal force is N
M = mass of object in kg
V = Speed of object in m/s

 

 
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View Comments on this Chapter - Total Comments (5)
 
wweerre Said :
all r coooo
 
  15/08/14 09:04 AM
   
Aroosha Pervaiz Said :
spend plumb line 4rm whr it is hanged upp
 
  21/04/13 03:43 PM
   
Aroosha Pervaiz Said :
@GHAOST SPEND A PLUMB LINE FROM WHR IT IS HANGED UP
 
  21/04/13 03:40 PM
   
Aroosha Pervaiz Said :
@ghost the point from where it is hanged up
 
  26/01/13 04:36 PM
   
Ghost Said :
Could you explain this :Suspend a plumb line from the same place. Thanks for your help.
 
  11/05/12 06:08 AM
 

 

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