this is a slide made by me uzair atif for olevels if you want to remove name just edit it like it if you love it

1. FRICTIONAL FORCE
BY;
UZAIR ATIF

2. FRICTION IS THE FORCE WHICH RESIST
MOTION OF OBJECT OR SURFACES

3. CAUSE OF FRICTION
Due to interlocking of two irregularities between the two surfaces in
the contact

4. FACTORS AFFECTING FRICTION
• KIND OF SURFACE
• AMOUNT OF FORCE PUSHING
THE SURFACE TOGETHER

5. DIFFERENT TYPES OF FRICTION
STATIC FRICTION
 SLIDING
FRICTION
ROLLING
FRICTION

6. METHODS TO REDUCE FRICTION
• USE LUBRICANTS LIKE OIL
OR GREASE.
• USE ROLLERS OR WHEELS.
• USE BALL BEARING.

7. ADVANTAGES OF FRICTION
• TO WALK OR RUN WITHOUT
SLIPPING.
• TO WRITE WITH A PEN OR PENCIL
ON PAPER.
• TO HOLD OBJECTS STEADILY IN
HANDS.
• TO SLOW DOWN A VEHICLE
WHEN THE BRAKE IS APPLIED.

8. DISADVANTAGES OF FRICTION
• SLOWS DOWN THE MOVEMENT
OF OBJECTS.
• PRODUCES UNNECESSARY HEAT
AND DAMAGES MACHINES.
• MORE ENERGY IS NEEDED TO
MOVE AN OBJECT.