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

Frictional force

Frictional force

Chapter : Force

Topic : Frictional Force

Related notes