ES1_Fundamental Concepts and Definitions, Force, and Force Systems

Question 1

An applied science which describes and predicts the conditions of rest or motion of bodies under the action of forces.

Answer 1

Mechanics

Question 2

What are the categories of Mechanics?

Answer 2

Rigid Bodies, Deformable Bodies, Fluids

Question 3

A physical quantity depicting the geometric measurement of 2 points.

Answer 3

Length

Question 4

the standard unit of length

Answer 4

Distance

Question 5

Associated with the notion of the position of a point, P, given in terms of three coordinates measured from a reference point or origin.

Answer 5

Space

Question 6

Essential for defining an event, requiring specification of the time and position at which it occurred.

Answer 6

Time

Question 7

Amount of matter an object contains, used for characterizing and comparing bodies.

Answer 7

Mass

Question 8

Represents the action of one body on another, characterized by its point of application, magnitude, and direction.

Answer 8

Force

Question 9

Used for measuring different physical quantities.

Answer 9

Systems of Units

Question 10

Force that is generated outside the body, such as a load on the body.

Answer 10

External force

Question 11

Force that is generated inside the body to keep it together.

Answer 11

Internal force

Question 12

An external force that tries to change the state of movement of the body. Example is the weight of a person.

Answer 12

Applied force

Question 13

A force that inhibits change in the state of movement of a body when acted on by an applied force.

Answer 13

Reaction force

Question 14

Force density, measured in N/m.

Answer 14

Distributed force

Question 15

A sketch showing only the forces on the selected particle.

Answer 15

Free-Body Diagram

Question 16

It shows the physical conditions of the problem.

Answer 16

Space Diagram

Question 17

A sketch showing only the forces on the selected particle.

Answer 17

Free-Body Diagram

Question 18

SI unit for for force

Answer 18

Newton

Question 19

(kg*m/s^2)

Answer 19

Newton

Question 20

US Customary unit for Mass

Answer 20

Slug

Question 21

US Customary unit for Force

Answer 21

Pound

Question 22

(lb/s^2)/ ft

Answer 22

Slug

Question 23

1 ft=___m

Answer 23

0.3048 m

Question 24

1 slug =__ kg

Answer 24

14.5938 kg

Question 25

1 lb = ___ N

Answer 25

4.4482 N

Question 26

Prefix and SI Symbol for 10^9

Answer 26

Giga (G)

Question 27

Prefix and SI Symbol for 10^6

Answer 27

Mega (M)

Question 28

Prefix for 10^-6

Answer 28

Micro

Question 29

Prefix and SI Symbol for 10^-9

Answer 29

nano (n)

Question 30

9.81 m/s^2 = ___ ft/s^2

Answer 30

32.2 ft/s^2

Question 31

Forces whose lines of action pass through
a common point

Answer 31

Concurrent

Question 32

Forces whose lines of actions are parallel

Answer 32

Parallel

Question 33

Forces whose lines of actions are neither parallel nor intersect in a common point

Answer 33

Non-concurrent

Question 34

If the resultant force on a particle is zero, the particle will remain at rest or continue to move in a straight line.

Answer 34

Newton’s First Law

Question 35

A particle will have an acceleration proportional to a non-zero resultant applied force.

Answer 35

Newton’s Second Law

Question 36

The forces of action and reaction between two particles have the same magnitude and line of action with opposite sense

Answer 36

Newton’s Third Law

Question 37

It states that the external effect of a force on a body is the same for all points of application along its line of action.

Answer 37

Principle of transmissibility of a force