Simple Machine
Simple
Machine is a simple tool used to facilitate human undertaking.
Simple Machine based on the principle of works can be divided into: lever / levers, inclined planes, pulleys and wheels pivot / wheel bergandar. Simple plane has mechanical advantage gained from the comparison between the load force with force so lighten human labor power. For more details, let us discuss one by one.
Simple Machine based on the principle of works can be divided into: lever / levers, inclined planes, pulleys and wheels pivot / wheel bergandar. Simple plane has mechanical advantage gained from the comparison between the load force with force so lighten human labor power. For more details, let us discuss one by one.
A =
power point
T = the fulcrum
B = point load
F = force power (N)
w = load force (N)
lk = power arm (m)
lb = arm load (m)
T = the fulcrum
B = point load
F = force power (N)
w = load force (N)
lk = power arm (m)
lb = arm load (m)
The
types of lever:
1) The first type of lever
That lever with the fulcrum is between the load point and power points.
1) The first type of lever
That lever with the fulcrum is between the load point and power points.
Example: nail clippers, scissors, clamps clothespins, forceps
2) The second type lever
That lever with a point load is between the fulcrum and the point of power.
Example: a wheeled cart, paper cutting tools, and pecan-breaking tool, corkscrew.
That lever with a point load is between the fulcrum and the point of power.
Example: a wheeled cart, paper cutting tools, and pecan-breaking tool, corkscrew.
3) The third type lever
That is the power lever to the point is between the fulcrum and the load point.
Example: shovel used to move the sand.
That is the power lever to the point is between the fulcrum and the load point.
Example: shovel used to move the sand.
Advantage Mechanical lever
Lever
mechanical advantage is the ratio between the force load (w) in the style of
the (F), can be written as: KM = w / F or KM = lk / lb, Mechanical advantage in
the lever depends on each arm. The longer the arm of his power, the greater the
mechanical advantage.
b. Sloping
Field
Inclined plane is one of the simplest types of aircraft used to move objects with a sloping path.
Inclined plane is one of the simplest types of aircraft used to move objects with a sloping path.
Mechanical
advantage of the incline
Mechanical advantage of the incline
depends on runway length and height of the incline. The smaller the angle of
the field, the greater the mechanical advantage or power of the smaller force
that must be done.
Mechanical advantage of the incline
defined by the ratio between the length (l) and high incline (h).
KM = l / h
Utilization of the incline in daily life are on the stairs and roads in mountainous areas.
KM = l / h
Utilization of the incline in daily life are on the stairs and roads in mountainous areas.
c. Pulley
Pulley is a wheel that rotates on its axis. Usually there is also a rope on a pulley or a connecting chain. Based on how it works, because the pulley is a kind of lever has the fulcrum, power, and weight. Pulleys are classified into three, namely fixed pulley, the pulley free, and compound pulley.
Pulley is a wheel that rotates on its axis. Usually there is also a rope on a pulley or a connecting chain. Based on how it works, because the pulley is a kind of lever has the fulcrum, power, and weight. Pulleys are classified into three, namely fixed pulley, the pulley free, and compound pulley.
1) fixed
Pulleys
Fixed pulley is a pulley whose position does not move during use. Pulleys are typically installed in a particular place. Example: The pulley is used on the flag pole and the well bucket
Mechanical advantage
In the fixed pulley, long sleeves with arm power so that the load on a pulley fixed mechanical advantage is 1, meaning that the power of force equal to the force load.
2) free
Pulleys
Unlike the fixed pulley, the pulley pulley free standing or position change and not installed in a particular place. Pulleys are typically placed on a rope whose position can be changed. One end of the rope tied to a particular place. If the other end pulled the pulley will move. Pulleys of this type can be found on the tools lifting containers at the port.
Unlike the fixed pulley, the pulley pulley free standing or position change and not installed in a particular place. Pulleys are typically placed on a rope whose position can be changed. One end of the rope tied to a particular place. If the other end pulled the pulley will move. Pulleys of this type can be found on the tools lifting containers at the port.
Mechanical Advantage
In the
free pulley, power arm length equal to twice the length of the arm so that the
load on a pulley fixed mechanical advantage is 2, meaning that the power of
force equal to half of the load force..
3) compound
pulley / pulley block
Compound pulley is a combination of the fixed pulley and pulley free. Both are connected by a rope pulley. In the compound pulley, the pulley attached to the load-free. One end of the rope attached to a pulley fixed cross section. If the other end of the rope is pulled then the burden will be lifted with a pulley moves freely upward.
Mechanical Advantage
Mechanical
advantage compound pulley is a rope used to lift the load.
d. Wheel pivot / wheel bergandar
Wheels are wheels that pivot connected to a shaft that can rotate together. Wheel pivot is one of the simple plane found in many devices such as steering wheel, steering the ship, bicycle wheel, vehicle wheel, and grinding.
Wheels are wheels that pivot connected to a shaft that can rotate together. Wheel pivot is one of the simple plane found in many devices such as steering wheel, steering the ship, bicycle wheel, vehicle wheel, and grinding.
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