The Centripetal Force Acting on the Moon Continuously Changes the of the Moons Motion
Circular motion is considered one of the most important movement in the universe such as Motion of the Earth around the Sun , Motion of the Moon around the Earth , according to Newton's Second Law , When a force acts on a body moving at uniform velocity , it acquires acceleration .
Principle of circular motion
If the direction of the acting force is in the same direction of motion , The velocity of the moving object increases , the direction of motion does not change .
Example : when the motorcyclist pumps more fuel , the motorbike is acted upon by a force in the same direction of motion and accelerates or increases velocity .
If the direction of the acting force is opposite to the direction of motion , The velocity of the moving object decreases , The direction of motion does not change .
Example : When the motorcyclist applies the brakes , the motorbike is acted upon by a force opposite to the direction of motion and decelerates or decreases velocity .
Centripetal force
If the direction of the acting force is perpendicular to the direction of motion , The velocity of the moving object remains unchanged , the direction of motion changes .
Example : When the motorcyclist leans his body to right or to left , a force is produced normal to the direction of motion causing a change in the direction of motion so that the motorbike moves in a circular path .
For an object to move in a uniform circular motion , it must be affected by a force perpendicular to its path towards the circle center which is called the centripetal force .
Uniform circular motion is the motion of body in a circular path at a constant speed and changeable direction , Centripetal force is the force acting continuously in a direction normal to the motion of a body , changing its straight path into a circular path .
Types of centripetal force
The centripetal force is the force that acts continuously perpendicular to the path of a moving body , causing it to move in a circular path , From these forces :
Tension force ( FT )
When pulling a body by a string or a wire , a tension force is originated , If this tension force is normal to the direction of motion of a body moving at constant velocity , this force causes the body to move in a circular path , This means that the tension force may behave as a centripetal force .
Gravitational force ( FG )
An attractive force exists between the Sun and the Earth in a direction perpendicular to the path of the Earth , This force causes the Earth to move in a circular path around the Sun , This means that the gravitational force may behave as a centripetal force .
Friction Force ( Ff )
When a car turns in a circular path or a curve , a friction force between the road and the car tyres is originated , This force acts normally to the direction of the car motion towards the center of the circle causing the car to move in a curved path , This means that the friction force may behave as a centripetal force .
Reaction force ( FN )
When a car moves in a circular path that is inclined to the horizontal , It is affected by a number of forces :
The reaction force : that always acts normally to the car , Resolving this reaction into two components , the horizontal component acts towards the center of the circle and helps the car to move in a curved path .
The friction force : Its horizontal component also acts towards the center of the circle and helps the car to move in a curved path .
This means that the centripetal force is the sum of the two components one of the reaction force and the other of the friction force towards the center of rotation .
Lifting force ( FL )
The lifting force acts normally to the aeroplane body , When the aeroplane tilts , the horizontal components acts normally to the plane motion towards the center of the circle causing the plane to turn in a curve , This means that the horizontal component of the lifting force on an aeroplane acts as a centripetal force .
thomasloyarround1951.blogspot.com
Source: https://www.online-sciences.com/physics/laws-of-circular-motion-types-of-centripetal-force/
0 Response to "The Centripetal Force Acting on the Moon Continuously Changes the of the Moons Motion"
Post a Comment