2. What’s Force?
Force is associated with push or
pull resulting in motion of a
body.

3. Force can be divided into two types:
i) ContaCt ForCe
ii) non ContaCt ForCe

5. Contact Force
The source of force that
comes from contact with the
object on which the the
force is applied.

6. Muscular Force
The muscular force comes
from muscles of man or
animals. Every physical
activity comes with a use a
muscle , Hence they are
muscular forces.

7. Running

8. Cutting of vegetables.

9. Cricket….

10. Frictional Force
friction is the force which comes into play when
an moves in contact with the surface of the
other.

11. Cycling

12. Walking.

13. Non Contact Force
The source of force and the object on which
the
force acts may remain distance from
another.

14. There are three types of non contact force:
i) Gravitational Force
ii) Magnetic Force
iii) Electro Static Force

15. Gravitational Force
The pull force of the earth is
called gravity.

16. Apple falling from a tree…

17. Catching a ball

18. Magnetic Force
Magnetic force is a force which
is exerted when a magnet
pulls something.

19. Horse shoe magnet…

20. Bar Magnets.

21. Electro Static force
If you rub a comb in your head and place it
near some bits of paper, the papers gets
raised.
This electro static pull exerts a force.

22. Famous People..
Sir Issac Newton :

23. Aristotle :

24. Galileo Galilei :

25. gravitational pull differs
from place to place.
The level of pull for
Tamil Nadu is….

26. Input interpretation: