SUBJECT: BASIC SCIENCE
TERM: 3RD TERM
A force can be defined as any action that makes or tries to move, stop or alter the speed of a body in a given direction.
TYPES OF FORCE
There are two types of force namely:
These are forces which sources are in contact with the body to which they are applied. The contact forces could be direct or indirect. Examples of contact forces are; Push, Pull ,Tension, Friction, Upthrust.
NON- CONTACT FORCES
These are forces which the sources do not require contact with the body they are applied. These forces act through a region in space called field. They are therefore also called FORCE FIELDS. Example include: Gravitational force, Electric force, Magnetic force
MAGNETIC AND GRAVITATIONAL FORCES
In a bar magnetic, there is North pole end south pole end, the like poles repel each other while unlike poles attract each other. Two magnets can attract each other when they were still some distance apart. Also magnet can attract iron fillings before the magnet came in contact with the iron fillings. These magnets came in contact with the iron fillings. This phenomenon shows that magnetic force act over an area around the magnet. Thus a magnetic force is called a field force which acts over an area.
The force by which the earth attracts all objects to itself is called the force of gravity or gravitational force. This is the reason why objects above the earth fall down to the earth.
The light objects like feathers, children balloon which do not fall immediately to the earth are supported by air, but they eventually fall to the earth.
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