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Frictional Force
Frictional force
6.2
Frictional force
The direction of the frictional force is always
opposite
to the direction of the movement of the object. Frictional force can
slow down
or
stop
a moving object.
Definition
Frictional force is the force when
two surfaces are in contact
Factors That Affect Frictional Force
Types of Surface
Mass of the Object
Smooth surfaces produce less frictional force
(The smoother the contacted surfaces, the lesser the frictional force produced)
Light objects produce less frictional force
(The lighter the mass of the object, the lesser the frictional force produced)
Rough surfaces produce great frictional force
(The rougher the contacted surfaces, the greater the frictional force produced)
Heavy objects produce great frictional force
(The greater the mass of the object, the greater the frictional force produced)
Frictional Force
Increasing the frictional force
Decreasing the frictional force
Using rubber mat
Using rough surface and stripes pattern
Using magnesium carbonate lime powder
Using lubricant oil
Using rollers, balls bearings or wheels
Using wax
Using grease
Using boric acid flour
Advantages and Disadvantages of Frictional Force
Advantages
Disadvantages
Enables an object to be held without slipping
Enables humans to walk or run without slipping
Enables an object to remain stationary
Enables humans to climb a tree
Produces loud sounds
Generates heat and causes the surface to become hot
Frictional force wears out a scraped surface
Causes heavy objects to be difficult to pull or push
Frictional force
6.2
Frictional force
The direction of the frictional force is always
opposite
to the direction of the movement of the object. Frictional force can
slow down
or
stop
a moving object.
Definition
Frictional force is the force when
two surfaces are in contact
Factors That Affect Frictional Force
Types of Surface
Mass of the Object
Smooth surfaces produce less frictional force
(The smoother the contacted surfaces, the lesser the frictional force produced)
Light objects produce less frictional force
(The lighter the mass of the object, the lesser the frictional force produced)
Rough surfaces produce great frictional force
(The rougher the contacted surfaces, the greater the frictional force produced)
Heavy objects produce great frictional force
(The greater the mass of the object, the greater the frictional force produced)
Frictional Force
Increasing the frictional force
Decreasing the frictional force
Using rubber mat
Using rough surface and stripes pattern
Using magnesium carbonate lime powder
Using lubricant oil
Using rollers, balls bearings or wheels
Using wax
Using grease
Using boric acid flour
Advantages and Disadvantages of Frictional Force
Advantages
Disadvantages
Enables an object to be held without slipping
Enables humans to walk or run without slipping
Enables an object to remain stationary
Enables humans to climb a tree
Produces loud sounds
Generates heat and causes the surface to become hot
Frictional force wears out a scraped surface
Causes heavy objects to be difficult to pull or push
Chapter : Force
Topic : Frictional Force
Year 6
Science
View all notes for Science Year 6
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