Module #1, Part 1- Fundamental Concepts and Definitions, Force & Force Systems Flashcards
is an applied science which describes and predicts the conditions of rest or motion of bodies under the action of forces.
is the foundation of most engineering sciences and is an indispensable prerequisite to their study.
Mechanics
- Rigid bodies
- Deformable bodies
- Fluids
Categories of Mechanics
- Statics
- Dynamics
Categories of Rigid bodies
needed to locate the position of a point in space. Distance is described in terms of a standard unit of ___
Length -
associated with the notion of the position of a point P given in terms of three coordinates measured from a reference point or origin
Space
definition of an event requires specification of the time and position at which it occurred
- Time -
used to characterize and compare bodies, e.g., response to earth’s gravitational attraction and resistance to changes in translational motion
Mass -
- represents the action of one body on another. A ___ is characterized by its point of application, magnitude, and direction, i.e., a force is a vector quantity.
- Force
- 1 ft = __in. (inches).
12
- ___ ft = 1 mi. (mile).
5280
___ lb = 1 kip (1 kilo-pound).
1000
- ___ lb = 1 ton
2000
N x 10^9
Giga
N x 10^6
mega
N x 10^3
kilo
N x 10^-3
milli
N x 10^-6
micro
N x 10^-9
nano
The weight of a body, or force of gravity exerted on that body, should also be expressed in ___.
Newton
Weight is a __
Force
Weight of a body Formula
W= mg
g=
9.81 m/s2 (32.2 ft/s2 )
on a body is a force generated outside the body (i.e. Load on the body)
External force
On a body is a force generated inside the body (to keep the body together
Internal force