Advantages of Friction

Friction allows us tohold things

Friction allows our shoesto grip the ground sothat we can walk withoutslipping

Can produce soundEx : violin and gitar

Allows us to carry outOur daily activities

Allows us to drive our carsor ride our bicycles

disadvantages of Friction

Shoes and types wear outbecause of friction when theyrub againts the road

Friction not only wears outmachine parts but also produceheat that can damage sensitiveparts in a machine

Friction can produce noiseEx : all machines produce noiseThat can cause noise pullution

Friction slows down all moving object

Common MistakeCommon Mistake

The larger the surface area of contact, the The larger the surface area of contact, the larger the frictional force larger the frictional force

Tre TruthTre Truth

Frictional force does not dpend on the Frictional force does not dpend on the surface area of contact. It depends on the surface area of contact. It depends on the weight of an object. The heavier the object, weight of an object. The heavier the object, the larger the frictional force.the larger the frictional force.

Therefore, it is easier to move a lighter Therefore, it is easier to move a lighter object than a heavier object is placed on the object than a heavier object is placed on the same type of surface. same type of surface.