Force did not touch the touch and force

Objects around us can not move by itself. There must be something to work on it so that objects can move. If you henda sliding wardrobes, cupboards you push it. As a result, these cabinets will go. If there is a crate on the floor is pulled by a rope tied to the coffin, casket will move. Push or pull is called force.

Weight and Mass Differences in Physics

Weight and Mass Differences in Physics
Heavy objects:
- Influenced by the acceleration of gravity
- The amount varies, depending on the acceleration of gravity (g) somewhere.

Mass of the object:
- Not affected by the acceleration of gravity.
- The amount is always fixed.

Force of Weight

Consider the following sentence "How much do you weight ?" and "how many pounds your body mass?" Which of the two sentences is that we often hear? The answer is the first sentence, but according to physics is the second sentence in question is due to mass instead of weight. In the science of weight physics unit Newton (N) while the mass unit kilogram (kg).  


Seacara mathematically can be formulated:

W = m × g

Definition:
w = weight of the object (Newton)
m = mass of the object (kg)
g = acceleration of gravity = 9.8 N / kg (N / kg = m / s ^ 2)

Scratch Force

Have you ever noticed some of the tires on the wheels of a bicycle or car. Grooved tire was made. What is its purpose? The goal is to bike or car tire does not slip when passing the road, particularly road slippery. Thus, the flow of bicycle and automobile tires in order to increase friction.

Does the frictional force?
Friction is the force arising from surface peregesekan two or more objects that are touching each other.

Frictional forces for human benefit, among others:
- Stop or slow moving vehicles to avoid collisions. For example, friction arises when the brakes on a bicycle or motorcycle.
- Facilitating the movement of people, objects or vehicles. For example we are much easier to walk on rough roads or asphalt than in the slippery clay.
- Cutting objects. For example friction between the saw with a wooden stick.
In addition has the advantage, friction can also be detrimental. Adverse frictional forces include:
- Surface vehicle tires or footwear to be worn because of rubbing against a rough road surface.
- Friction between the wheel axle with the hole, and friction between the parts in the machine.

Various Kinds of Force

1. Muscular force, which is the force generated by a muscle man or animal muscle.
For example, a child picked up a bucket of water.
2. Force Tracks, the force generated by the objects recovered are experiencing pemampayan or stretching.
For example: In a suppressed or withdrawn.
3. Frictional forces, ie forces arising due to friction between the surfaces of two objects or more.
For example: the friction between car tires with asphalt road surface.
4. Force of machine, which is the force generated by the fuel inside the engine.
For example: the engine that drives the motorcycle engine.
5. Electric force, ie the force generated by electric charges or electric currents.
For example: a ruler mica-rub rubbed with hair.
6. The force of gravity, the force generated by the objects mass to attract the mass of the other toward the center of the object in question.

Understanding of Force

Force is a quantity that is capable of producing mechanical changes to an object either changes in motion and shape changes.
Example: an object is stationary on the table would move if given the force of push or pull force.
Force symbolized by the letter F, which is derived from the force. Unit of force in the International System (SI) is expressed by Newton (N) and dyne in the cgs unit.
The combination of two or more force called the resultant force. Tool to measure the magnitude of the force called the Balance Spring.