3. Definition Force
Force is a push or pull that cause objects to
changing position.
Formula :
F = m.a
F = Force
m= Mass
a= Acceleration
4. Types of Force
Consciously or not we often do activities that require force.
But the kind of force is not just that we spend.
Thefollowingare the types of force:
5. 1. Force Muscle
The power generated by human muscle.
This style is often done when we're lifting weights or gymnastics at school.
If we often do exercise then your muscle will grow big and strong.
6. 2. Spring Force
The power generated by rubber or springs are stretched.
For example when you play darts, rubber able to push arrows flew fast
and far.
7. 3. Friction Force
If two objects, each experienced friction, then between the two will
emerge friction. Friction can be beneficial and detrimental. When we walk
on a dry road, between the shoe and road friction will arise. Friction helps
us to be able to walk. Imagine if the roads slippery, the friction will be small
and we will find it hard to walk.
8. 4. Magnetic force
Forces pulling needles, nails, or other metal objects that are
nearby. The magnet has two poles ie north and south poles. There are
diverse forms of shaped magnetic needle, there is a form of letter "U", a
cylindrical, circular and there is a rod-shaped.
Look at pictures of the following forms of magnets!
9. 5. Elektrical force
The force on the ruler that was rubbed with dryhair so that it can
attract small pleces of paper.
10. 6. The force of gravity
The force of gravity pulling things on the earth’s surface so object
allways fall down.
Different when in space the astronauts do not feel the force of
gravity, consequently they will hover when in outer space.
11. Resultan Force
Two or more force acting on an object in a
line of work can be replaced with a substitute
force (R).
Resutan line force of work. The formula :
R F1 F2 F3 ....
Resultant force is a not line of work. the
formula:
2 2
R F1 F2
