Engineering Mechanics: Statics
•
Mechanics is the branch of the physical sciences
d
ith th
t t
f
t
ti
f b di
concerned with the state of rest or motion of bodies
subjected to forces.
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Engineering Mechanics
• Mechanics
Mechanics
– Rigidbody mechanics
• Dynamics – the study of objects in motion
•
Dynamics – the study of objects in motion
– F = ma
•
Statics  the study of objects in equilibrium
– Also F = ma, but a = 0
– Deformablebody mechanics
– Fluid mechanics
Newton’s Laws
Newton s Laws
•
1
st
Law
– If an object is in motion, it will remain in
motion.
If an object is at rest, it will remain at rest,
unless a force acts upon it.
–
When the sum of forces acting on an object is zero, the object
will remain at rest if initially at rest.
•
2
nd
Law
– When the sum of forces acting on an object is
not zero, the sum of the forces is equal to the product of
the mass and its acceleration.
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 Fall '10
 Stokes
 Statics, Force, Engineering Mechanics Engineering Mechanics, Vector Addition Vector, Addition Vector Addition, Vector Vector Subtraction, Vector Components Vector

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