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Ch 1 Statics
EGR-206
25
Engineering
Undergraduate 1
01/25/2017

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Term
Mechanics
Definition
a branch of the physical sciences that is concerned with the state of rest or motion of bodies that are subjected to the action of forces.
Term
Statics
Definition
deals with the equilibrium of bodies, that are either at rest or move at a constant velocity.
Term
Dynamics
Definition
deals with the accelerated motion of bodies
Term
Length
Definition
used to locate the postion of a point in space and use that to describe the size of the physical system.
Term
Time
Definition
conceived as a succession of events.
Term
Mass
Definition
a measure of a quantity of matter that is used to compare the action of one body with that of another.
Term
Force
Definition
considered as a "push" or "pull" exerted by one body on another.
Term
Particle
Definition
has a mass, but a size that can be neglected.
Term
Rigid body
Definition
considered as a combination of a large number of particles in which all the particles remain at a fixed distance from one another.
Term
Concentrated Force
Definition
represents the effect of a loading which is assumed to act at a point on a body.
Term
Newton's First Law
Definition
a particle are rest tends to stay at rest and a particle in motion tends to stay in motion.
Term
Newton's Secon Law
Definition
particle acted upon by an unbalanced force F experiences an acceleration a that has the same direction as the forse and a magnitude that is directlty proportional to the force.
Term
Newton's Third Law
Definition
The mutual forces of action and reaction between two particles are equal, positive, and collinear.
Term
Weight
Definition
the only gravitational force considered in our study of mechanics.
Term
Newton
Definition
unit of force that is derived from F = ma
Term
Slug
Definition
the unit of mass that is derived from the equation F = ma
Term
Dimensionally Homogeneous
Definition
meaning that each term must be expressed in the same units.
Term
Rigid body, Deformable body, and Fluids
Definition
What are the three differnt branches of mechanics?
Term
Because most of the standard equipment that is used is accurate to about .2%
Definition
Why do most engineers calculations typically only require 3 sig figs?
Term
Meters
Definition
What is the SI unit for Length?
Term
Kilograms
Definition
What is the SI unit for Mass?
Term
Newton
Definition
What is the SI unit for Force?
Term
Feet
Definition
What is the US unit for length?
Term
Slugs
Definition
What is the US unit for Mass?
Term
Pounds
Definition
What is the US unit for Force?
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