The document discusses different types of forces including contact and non-contact forces, internal and external forces, and balanced and unbalanced forces. A force is defined as an influence that can cause a stationary body to be set in motion or change the speed or direction of a moving body. Contact forces require touching an object while non-contact forces act without touching. Internal forces are exerted from within a body and external forces are exerted from outside a body. Balanced forces have a net resultant of zero while unbalanced forces do not have a net resultant of zero.

1. POWER POINT PRESENTATION
BAIJU.B.GEORGE
PHYSICAL SCIENCE
REG. NO. 13975013

2. FORCE

3. Title
 FORCE
 CONTACT AND NON-CONTACT FORCE
 INTERNAL AND EXTERNAL FORCE
 BALANCED AND UNBALANCED FORCE

4. FORCE
A force is an influence which tends to set a stationary body
In motion or which tends to change the speed and
direction of a moving body or which tends to change the
shape of a body.
Unit of force is newton(N).

5. CONTACT FORCE
A force that can be applied only when it is in contact with
an object is called a contact force.
Eg: muscular force

6. NON-CONTACT FORCE
A force that can be applied without any contact between
two bodies is called non-contact force.
Eg: Magnetic force

7. INTERNAL FORCE
A force exerted by internally is called internal
force.

8. EXTERNAL FORCE
A force exerted by externally is called external
force.

9. BALANCED FORCE
When a number of forces act on a body, and the
resultant of these forces is zero, then the forces
are said to be balanced.

10. UNBALANCED FORCE
When a number of forces act on a body, the
resultant of forces is not zero, the forces are said
to be unbalanced.

11. THANK YOU