LEARNING OBJECTIVES
Be
Identify
Analyze
Examine
By the end of this
session
participants will
be able to:-
Identify how
friction works and
how it relates to
motion and force
Analyze by
experimenting
whether a surface
will have friction
Examine where you
might see friction in
daily life
FORCE AND FRICTION
KEYWORDS
SMOOTH AND ROUGH SURFACES
STATIC, SLIDING AND ROLLING
FRICTION
FRICTION
 Frictional
force arises when two
substances contact each other
 Friction
is caused by the interlocking
of irregularities between the two
surfaces in contact
 Friction
is a force that resist the
motion of objects or surfaces
 Friction
always works in the direction
opposite from the direction the object
is moving
FACTORS AFFECTING FRICTION
ACTIVITY
:-
FIND YOUR
TASK CARD
AND READ
IN GROUPS
DO YOUR
ACTIVITY
AND
DISCUSS THE
FINDINGS IN
YOUR
GROUP
ASSIGN A
SPEAKER
FROM YOUR
GROUP
YOU HAVE 3
MINUTES TO
COMPLETE
YOUR TASK
FACTORS AFFECTING FRICTION

Friction depends on a material’s properties such as
roughness, how clean the surfaces are, and other factors.

Friction depends upon two factors.

Nature of the surfaces in contact. ( The smoothness of the
surfaces).

How hard the surfaces press together.
Friction is less on a smooth surface.
Friction is more on a rough surface
Friction is more if the surfaces are
pressed harder
Friction is less if the surfaces are
not pressed harder
TYPES OF FRICTION
PLEANARY
CONNECT
FRICTION TO
DAILY LIFE
CHOOSE ONE
ACTIVITY FROM
YOUR DAILY
LIFE WHERE
YOU CAN
EXPERIENCE
FRICTION