English

Physics Subject


A. Force
In the force there is called Indolence, indolence means laziness of objects for moveForce divided into 2 parts & no-touched force and touched force. Force of touch or contact force is the force caused by the two bodies in contacting directly.  While the force does not touch the field or force is the force acting between two objects are not touching.Examples of force fields in nature are:
(1.) Gravitational force between two objects
(2.) Electrostatic forces between two electric charges
(3.) The strong nuclear force between atoms



a.Newton's Law
There is third part of newton's law
Newton's 1st law is a resultant force which has a 0 / R = 0, means that objects do not move at all.
Newton's 2nd law states that the resultant equivalent of 0. This means that it has speeded up or slowed down so that the force that causes objects to move.
Newton's 3rd law states that the moving object but the source of motion (which causes a moving object) is also get the force.
Example:
NEWTON law 1: The drive table but table does not move.
NEWTON law 2: People push the car and car part moves.
NEWTON law 3: The Kick the ball, moving objects but also the person who kicked the ball to get the force.


Friction force
Friction force is the force between two surfaces are surfaces touch.the illustrate is In the hills and valleys that come from dust, dirt or other particles that attach to these surfaces. When the two surfaces in contact, so that the resulting force of attraction between the hills and valleys that come into contact, the force of attraction is exactly what is called the frictional forceExamples of the friction force:1. Frictional force between the foot and the road surface so that people can walk2. Frictional force between the tires and the road surface so that cars can run3. Frictional force between the tires and brakes so the bike bike to stop.


Gravitational force 
The gravitational force is attractive forces between two objects / over the mass. The law of gravity states that "every particle of an object in the universe will attract particles and inversely proportional to the square of the distance between each of these particles."The force of gravity always acts along the straight line between two particles and an action-reaction force pairs. although the mass of the two particle is different, but the gravitational force is always the same.The law of gravity can be used to explain natural phenomena, such as the gravity of the object from the earth's surface and the trajectory of the planet's orbit around the sun.