interaction - an action that is mutual.All bodies are able to interact with each other by means of mechanical motion, inertia, force, density and, in fact, the interaction of bodies.In physics, the action of the two bodies or of bodies to each other is called the interaction.It is known that the approach of bodies changing nature of their conduct.These changes are reciprocal.Dilution bodies over long distances interaction disappear.
The interaction of the bodies of his result is always felt by all bodies (in fact under the influence of something, always returns).For example, in the billiard cue at impact over the ball flies past a lot stronger than the cue that is explained by the inertia of bodies.Types and measure the interaction of bodies determined by this very characteristic.Some less body inert, others more.The greater the weight, the greater its inertia.The body, the interaction changes its speed is slower, has a greater mass and is more inert.The body will change its speed, it has less weight and less inert.
Force - a measure that measures the interaction of bodies.Physics distinguishes four types of interactions can not be reduced to each other: electromagnetic, gravitational, strong and weak.Most often, the interaction of bodies committed at their contact, which leads to a change in velocity of the bodies in an inertial frame of reference that is measured between the current force.So, to set in motion the stalled car, pushed his hands, it is necessary to apply a force.If it is necessary to push up the hill, then it is much harder to do, because this would require a large force.The best option in this case will generate a force directed along the road.In this case, indicate the magnitude and direction of the force (note the strength is a vector quantity).
bodies Interaction also takes place under the influence of mechanical force, the consequence of which is the mechanical movement of the bodies or parts thereof.Strength is not an object of contemplation, it is the cause of motion.Every action of one body relative to another manifests itself in motion.An example of the action of mechanical force, generating traffic is the so-called "domino" effect.Artfully arranged dominoes falling one after another, passing movement down the row, if push the first domino.There is a transfer of motion from one figure to another inert.
interaction of bodies in contact can lead not only to slow down or accelerate their speed, but also to their deformation - changes in the volume or shape.A striking example is the piece of paper in his hand tight.Acting on a power we give to the accelerated movement of the parts of the sheet and its deformation.
Any body resists deformation when trying to stretch, compress, bend.On the part of the body begin to act the forces opposing it (resilience).The resilient force of the spring is shown at the moment of tension or compression.Goods that are pulling the rope on the ground, is accelerating because the force of the stretched elastic cord.
Interaction bodies while sliding along the surface separating them does not cause deformation.In the case of, for example, sliding a pencil on a smooth surface of the table, skis or sleds on the hard-packed snow, the force that prevents slipping.It is the force of friction depends on the surface properties of interacting bodies and by pressing them to each other forces.
Interaction bodies can take place at a distance.The action of attractive forces, known as gravity, occurs between all bodies around, it can be seen only when the body has dimensions of stars and planets.Gravity is formed from the gravitational attraction of all the celestial bodies and the centrifugal forces that are caused by their rotation.So, the Earth attracts the Moon, the Sun attracts the Earth, so the moon revolves around the Earth, and the Earth, in turn, revolves around the sun.
distance there are also electromagnetic forces.Despite the lack of touching a body, a compass needle will always rotate along the magnetic field lines.One example is the action of electromagnetic forces and static electricity, often occurring on the hair when combing.The charge separation occurs on them due to the frictional force.Hair, positively charged, begin to repel each other.This often occurs when the static equipped sweaters, wearing hats.
Now you know that such cooperation bodies (the definition was quite unfolded!).
