Engineering Mechanics

1. ENGINEERING MECHANICS

2. It is defined as the branch of
science. To study the conditions of
rest or motion of bodies under the
action of forces.

4. studying the external effect of
force on a body such as
displacement,velocity and
acceleration etc.,
Studying Internal effect of forces
on a body such as stresses
(internal resistance),change in
shape etc.

5. Deals with forces and its effects
when the body is at rest
Deals with forces and its effects
when the body is in moving
condition

6. Negligible deformation (no
deformation) under the action of
forces.
Assuming 100% strength in the
materials. Large number of particles
occupying fixed positions with each
other.
But the deformations induced are
usually very small which does not
affect the condition of equilibrium.

7. Treating the rigid body as a
particle which is negligible in size
when compared to the study
involved. (very small amount of
matter which is assumed as a
point in a space).
Example: studying the orbital
motion of earth

8. Force may be defined as any
action that tends to change the
state of rest or motion of a body
to which it is applied.

9. • Magnitude
• Direction
• Point of Application