Page 103 - SCIENCE DLP T6 SK (SEMAKAN 2017)

Effects of Frictional Force

matches

Miss Ema, how does a match light up?

A match can light up when heat is produced as a result
of the frictional force between two surfaces that are in
contact. The heat causes the end part of the match that
is coated with flammable material to burn.
There are advantages and disadvantages of frictional force
in our daily activities.

Advantages of frictional force

1. 2.

I like to play

Rubbers can erase writings Brake pads can slow down bicycles
on paper. and stop their movement.

3. 4.

Sandpaper can smoothen Tread patterns on vehicle tyres can
the rough surface of wood. increase the grip on the soil.

6.2.2 95