reviewer (definitions) Flashcards
___________ is defined as the science that describes and predicts the condition of rest or motion of bodies under the action of forces.
Mechanics
A _________ is any positive or negative physical quantity that can be completely specified by its magnitude.
Scalar
Two forces having the same magnitude, parallel lines of action, and opposite sense, are said to form a _________.
Couple
This principle states that the conditions of equilibrium or motion of a rigid body is replaces by another force of the same magnitude and same direction.
Principles of Transmissibility
This law states that two particles of different masses are mutually attracted with equal opposite forces.
Newton’s Law of Gravitation
This law states that if the resulting forces acting on a particle is zero, the particle remains at rest (if originally at rest) or moves with constant speed in a straight line (if originally in motion).
Newton’s First Law or the Law of Inertia
This law states that if the resultant force acting on a particle is not zero, the particle has an acceleration proportional to the magnitude of the resultant and in the direction of the resultant force.
Newton’s Second Law
The forces of action and reaction between bodies in contact have the same magnitude, same line of action, and opposite sense.
Newton’s Third Law
A _______ is any physical quantity that requires both magnitude and a direction for its complete direction.
Vectors
It is a measure of rotation about a point.
Moment
This is the perpendicular distance between couple multiplied by the magnitude forces that make up the couple.
Moment of a Couple
_________ is a force that resists the movement between two contacting surfaces that slide relative to one another.
Friction
A ________ is a structure composed of slender members joined together at their end points.
Truss
__________ is the load which will be distributed over the length of the beam in such a way that rate of loading will be uniform throughout the distribution of the beam.
Uniformly Distributed Load
__________ is the load which will be distributed over the length of the beam in such a way that rate of loading will not be uniform throughout the distribution of the beam.
Uniformly Varying Load