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SYSTEM OF
FORCES
M. S. KHAN
01
TABLE OF CONTENTS
02
03
04
05
Concept of force
Characteristics of force
Force classification
Force system
Force system ...
CONCEPT OF FORCE
1
• A force is a push or pull upon an object resulting from the
object’s interaction with another object....
2
CHARACTERISTICS OF FORCE
θ
Line of action
Point of application
𝑥 (+)
𝑦 (+)
𝑦 (−)
𝑥 (−)
Direction
3
FORCE CLASSIFICATION
FORCE
Contact Force Body Force
It is produced by direct
physical contact between
objects.
It is pro...
4
CONTACT FORCE
Applied Force
It is a force that is applied to an object by a
person or another object
Drag Force
It is a ...
CONTACT FORCE
5
Normal Force
It is a force that is acting perpendicular to
the surface of object
Spring Force
It is a forc...
6
BODY FORCE
Gravitational Force
It is a force that causes massive objects to
pull other objects towards them
Electrical F...
FORCE SYSTEM
7
Definition
When number of forces act simultaneously
on a body then they are said to form
a force system
8
FORCE SYSTEM CLASSIFICATION
FORCE SYSTEM
Coplanar Non-coplanar
Line of action of all
the forces lie on same
plane
Line o...
9
COPLANAR FORCE SYSTEM
Concurrent Parallel General
10
NON-COPLANAR FORCE SYSTEM
Concurrent Parallel General
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This presentation covers concept of force and different types of forces as well as different system of forces. I hope this PPT will be helpful for instructors as well as students.

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Force, types of forces and system of forces

  1. 1. SYSTEM OF FORCES M. S. KHAN
  2. 2. 01 TABLE OF CONTENTS 02 03 04 05 Concept of force Characteristics of force Force classification Force system Force system classification
  3. 3. CONCEPT OF FORCE 1 • A force is a push or pull upon an object resulting from the object’s interaction with another object. • It is a vector quantity (having both magnitude & direction). • The unit of force is newton (N).
  4. 4. 2 CHARACTERISTICS OF FORCE θ Line of action Point of application 𝑥 (+) 𝑦 (+) 𝑦 (−) 𝑥 (−) Direction
  5. 5. 3 FORCE CLASSIFICATION FORCE Contact Force Body Force It is produced by direct physical contact between objects. It is produced when an object is located within a force field. • Applied force • Drag force • Frictional force • Normal force • Spring force • Tension force • Gravitational force • Electrical force • Magnetic force
  6. 6. 4 CONTACT FORCE Applied Force It is a force that is applied to an object by a person or another object Drag Force It is a force that is experienced by an object when it is moving through a fluid Frictional Force It is a force that is resisting the relative motion of objects sliding against each other
  7. 7. CONTACT FORCE 5 Normal Force It is a force that is acting perpendicular to the surface of object Spring Force It is a force that is exerted upon an object by a compressed or stretched spring Tension Force It is a force that is exerted by a cable, rope, chain or string when they are subjected to pull
  8. 8. 6 BODY FORCE Gravitational Force It is a force that causes massive objects to pull other objects towards them Electrical Force It is an attractive or repulsive force between two charged objects Magnetic Force It is an attractive or repulsive force between two magnetic objects
  9. 9. FORCE SYSTEM 7 Definition When number of forces act simultaneously on a body then they are said to form a force system
  10. 10. 8 FORCE SYSTEM CLASSIFICATION FORCE SYSTEM Coplanar Non-coplanar Line of action of all the forces lie on same plane Line of action of all the forces does not lie on same plane
  11. 11. 9 COPLANAR FORCE SYSTEM Concurrent Parallel General
  12. 12. 10 NON-COPLANAR FORCE SYSTEM Concurrent Parallel General
  13. 13. THANK YOU
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This presentation covers concept of force and different types of forces as well as different system of forces. I hope this PPT will be helpful for instructors as well as students.

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