LESSON 3: FORCE SYSTEMS: FORCE VECTORS

Question 1

What are the types of vectors

Answer 1

scalar quantities
vector quantities
free vector
sliding vector
bound or fixed vector
unit vector

Question 2

A type of vector that possess only magnitude; examples are time, volume, energy, mass, density, work.

Answer 2

Scalar quantities

Question 3

A type of vector that possess

Answer 3

both magnitude and direction (direction is understood to include both the angle that the line of action makes with a given reference line and the sense of the vector along the line of action), examples are force, displacement, velocity.

Question 4

Example of vector quantites

Answer 4

force, displacement, velocity.

Question 5

Example of scalar quantities

Answer 5

time, volume, energy, mass, density, work.

Question 6

A type of vector that may be moved anywhere in space provided it maintains the same direction and magnitude.

Answer 6

Free Vector

Question 7

A type of vector that may be applied at any point along its line of action.

Answer 7

Sliding Vector

Question 8

A type of vector that must remain at the same point of application.

Answer 8

Bound | Fixed Vector

Question 9

is a vector one unit in length.

Answer 9

Unit Vector

Question 10

a system of vectors is the least number of vectors that will replace the given system.

Answer 10

Resultant

Question 11

the physical science which deals with the effect of forces on objects at rest

Answer 11

Mechanics

Question 12

part of mechanics which concerns the equilibrium of bodies under action of forces.

Answer 12

Statics

Question 13

part of mechanics which concerns the motion of bodies under action of forces

Answer 13

Dynamics

Question 14

a system of connected parts used to support loads (in more general term: “body”).

Answer 14

Structure

Question 15

General term for structure

Answer 15

Body

Question 16

The process to determine how a structure responds to specified loads, based on the application of physical laws (engineering mechanics) and mathematics.

Answer 16

Structural Analysis

Question 17

only associated with magnitude.

Answer 17

Scalar quantities:

Question 18

possess direction as well as magnitude.

Answer 18

Vector quantities

Question 19

not confined to a unique point or line in space.

Answer 19

Free vector

Question 20

has a line of action but not at a unique point of application. The vector can be applied at any point along the line of action.

Answer 20

Sliding vector

Question 21

has a unique point of application

Answer 21

Fixed vector

Question 22

Primary objective of structural objective

Answer 22

computation of reactions, internal forces, stresses, and deformations.

Question 23

Fundamental relations of structural objective

Answer 23

equilibrium, constitutive, and compatibility.