reviewer (definitions)

Question 1

___________ is defined as the science that describes and predicts the condition of rest or motion of bodies under the action of forces.

Answer 1

Mechanics

Question 2

A _________ is any positive or negative physical quantity that can be completely specified by its magnitude.

Answer 2

Scalar

Question 3

Two forces having the same magnitude, parallel lines of action, and opposite sense, are said to form a _________.

Answer 3

Couple

Question 4

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.

Answer 4

Principles of Transmissibility

Question 5

This law states that two particles of different masses are mutually attracted with equal opposite forces.

Answer 5

Newton’s Law of Gravitation

Question 6

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).

Answer 6

Newton’s First Law or the Law of Inertia

Question 7

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.

Answer 7

Newton’s Second Law

Question 8

The forces of action and reaction between bodies in contact have the same magnitude, same line of action, and opposite sense.

Answer 8

Newton’s Third Law

Question 9

A _______ is any physical quantity that requires both magnitude and a direction for its complete direction.

Answer 9

Vectors

Question 10

It is a measure of rotation about a point.

Answer 10

Moment

Question 11

This is the perpendicular distance between couple multiplied by the magnitude forces that make up the couple.

Answer 11

Moment of a Couple

Question 12

_________ is a force that resists the movement between two contacting surfaces that slide relative to one another.

Answer 12

Friction

Question 13

A ________ is a structure composed of slender members joined together at their end points.

Answer 13

Truss

Question 14

__________ 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.

Answer 14

Uniformly Distributed Load

Question 15

__________ 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.

Answer 15

Uniformly Varying Load

Question 16

It is built into a rigid support at one end, with the other being free. The build-in support prevents displacements as well as rotations of the end of the beam.

Answer 16

Cantilever Beam

Question 17

It has two supports, the pin/hinge and roller support.

Answer 17

Simply Supported Beam

Question 18

It is said to be supported by a pin and a roller support, with one or both ends of the beam extending beyond the supports.

Answer 18

Overhanging Beam

Question 19

It is the combination of the cantilever beam and a simple supported beam.

Answer 19

Propped Cantilever Beam

Question 20

A _______ is supported at both ends and is restrained against rotation at the supports.

Answer 20

Fixed Beam

Question 21

It is the load that acts at a point on the beam.

Answer 21

Point Load

Question 22

If two vectors are added together, the the result is called _________ vector.

Answer 22

Resultant

Question 23

In vector addition, the resultant is formed by an algebraic or scalar addition if and only if the vectors are _________.

Answer 23

Collinear

Question 24

Which of the following assumptions is/are TRUE regarding the analysis of trusses?

I. All joints are pin connected and free from friction.
II. Members will be subjected to only axiel forces.
III. Self weight of members is negligible.
IV. The loading is such that forces in the member are within elastic limit.

Answer 24

I, II, III & IV

Question 25

_________ are composed of several regular areas whose centroids are unknown.

Answer 25

Composite areas