TOPIC:
Study Of Free Body Diagram
Free Body Diagram

A force diagram, which
is also known as a free
body diagram, is a
sketch in which all the
force vectors acting on
an object are drawn
with their initial points
at the location of the
object.
Free Body Diagram
Free-body diagrams are
used to show the relative
magnitude and direction of
all forces acting on an
object.
Free Body Diagram
This diagram
shows four forces
acting upon an
object. There
aren’t always
four forces, For
example, there
could be one,
two, or three
forces.
Examples
•A books are at rest
on a table top.
Diagram the forces
acting on a book.
Applied Force
•In this diagram,
there are normal and
Applied forces on the
book.
Normal Force
Examples
•A Jet is Moving with
constant speed.
Diagram the forces
acting on a Jet.
•In this diagram,
there are normal (lift),
Applied, weight and
Drag (Friction) forces
on the Jet.
Complex Free Body Diagrams
Consider a Free
Body Diagram
of Bridge. There
are Many Forces
and Load Acting
on it.
Complex Free Body Diagrams
F app
F app
Ff
W
FN
W
θ
θ
Ff
FN
Applications Of Free Body Diagram
Lifting the weight
Design Door
Applications Of Free Body Diagram
Street Lights
Engine
Importance Of Free Body Diagram
Drawing a free body diagram can help
us to determine the unknown forces on
moments applied and
equations of motion of the body and
thus help to analyze a problem in statics
or dynamics. In analysis of structures,
free body diagrams for a component of
a structure or part thereof are used in
determining shear forces and bending
moments.
.