this lesson focuses on the Force

1. FORCE

2. WHAT IS FORCE?
A push or pull upon an object resulting
from the object’s interaction with another
object.
Measured in units of Newton (N) which is
equivalent to the unit kg·m/s².
It is named after SIR ISAAC NEWTON.
PUSH PULL

3. WHAT CAN FORCE DO?
 A force can make an object move.
 A force can change the direction of a moving
object.
 A force can make a moving object to speed up.
 A force can stop a moving object.
 A force can change the shape of an object.

4. TYPES OF
FORCES

5. • Applied
• Tensional
• Normal
• Frictional
• Air Resistance
Contact
Force
 Is a type of force that needs the
objects to touch for the force to
work.
 Two interacting objects are
physically in contact with each
other.

6. • Gravitational
• Magnetic
• Electrostatic
Non-Contact Force
 Is a type of force that can
happen without the objects
touching.
 Two interacting objects are
not in physical contact with
each other, but are able to
exert a push or pull despite
the physical separation.

7. Applied Force
Force which is applied to an object
by another object or by a person.
Tensional Force or Tension
 Force which is transmitted through a string,
rope or wire when it is pulled tight by forces
acting at each end.
 Directed along the wire and pulls equally on
the objects on either end of the wire

8. Normal Force
Support force exerted upon an object which is
in contact with another stable object
Frictional Force
 Force exerted by a surface as an object
moves across it or makes an effort to
move across it
 Opposes the motion of the object
 Varies directly with load
 Independent of surface area

9.  Special type of frictional force
which acts upon objects as
they travel through the air
 Always opposes the motion of
the object
 Depends on surface area of
object
Air Resistance

10. Gravitational Force
Force with which the earth, moon, or
other massive body attracts an object
towards itself
Equal to the weight of the object as given
by the equation:
-gravitational force (weight)
-mass
-acceleration due to gravity (9.8m/s²)

11. Mass- amount of matter that is
contained by the object in units
of kilograms (kg)
Weight
 Force of gravity acting upon
an object in units of newton
(N)
 Change depending on location

12. Magnetic Force
The push or pull exerted by a
magnet.
Electrostatic force
The force that exist between all
charged particles

13. Thank you
for listening!
AJA!!!