Forces: called forces to any actions or influence which could a affect the state of motion or rest of a body, producing an accleration changing its the speed .
Types of forces:
Gravity: its the force exerted by heart on old bodys toward its center.
Electrical Force: appears a force between two or more loads called electric force whose magnitude depends on the value of chargeds and the distancs that separates them, whilt its sign depends on the sign for each load. Chargeds repel each other while those the of opposite signs attract.
Magnetic force: magnetic forces are produced by the motion of charged particles such as electrons. The magnetic forces between magnets are electromagnects. Its a residual effect of the magnetic force between moving chargeds.
Friction: is defined as a force of friction between surfaces in contact, that opposes motion between two surface. Its generated by imperfaction, especially microscopic contact.
Forces and movement:
Make something move: for example, when throw a ball, the ball moves
Stop a moving body: for example, when a player kicks the ball and is stoped by an other person, in this case the goalkeeper.
Change the direction: for example, when we drive and the way we decided to change direction and go to a different destination.
Increase the speed: for example, when we walk and we started running, increase the speed.
Reduce the speed: for example, when we started running and we started walking, reduce the speed.
Machine:A machine is a set of parts or moving parts and fixed articulated through their relative movements transform the energy in trabajo.Types of machines: The types of machines can be classified into 4 types of machines. These machines, they are called Simple Machines.
Human energy when we do the work, and write, move hand Water or wind: abanicarte, swimming Fuel, before the fuel burners were
Electricity, light which produces luminosity
Types of machines:
Machines Movement This machines use a motor.
For example: airplane and boats.
Termal machines A heat engine is a set of mechanical elements that can exchange energy. For example: steam engine .
Use for communicate with other people
For example: mobile phones, computers...
Inside a machine:
Casing and structure Distribution and order of the important parts. System of interrelated elements sí.Operating parts and Mechanisms The components of a gasoline engine are Cylinder Block Carter Cylinder Head: cast iron piece
Block: cylinders are Carter: This is the place where the oil
Electric motors The engine is what makes the operation of the machinery to produce movement at the expense of other energy sources, there combustion engines, circuits and electronic s.
Inside a machine next:
An electrical circuit is an interconnection of electrical components such as resistors, inductors, capacitors, transmission lines, voltage sources, power sources and circuits intenrruptores.
The electronic circuits can become very complex, but at a very basic level, you always have the electricity supply (battery), load and two cables to carry electricity between the battery and load. Electrons move from the origin, cargo and back to the source.