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Statics > Lesson 1 > Flashcards

Lesson 1 Flashcards

1
Q

It is a part of ENGINEERING MECHANICS and is considered as the science that considers the effects of forces upon rigid bodies (static condition-NO MOTION).

A

Statics of Rigid Bodies

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2
Q

It pertains to the effects and distribution of forces on bodies which are at rest/remain at rest.

A

Statics

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3
Q

It deals with the study of the motion of rigid bodies caused by forces acting on them.

A

Dynamics

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4
Q

It pertains to the definite amount of matter (solids), the parts of which are fixed relative to each other.

A

Rigid body

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5
Q

It requires a great magnitude of a force to cause its disassembly

A

Rigid body

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6
Q

What are the prime examples (2) of a rigid body?

A

TRUSSES of structures and FRAMES of machines

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7
Q

TRUSSES OR FRAMES?
It is for larger structures (houses, buildings) having multiple number of parts (bolted, riveted, or welded). It is also subject to a variety of loads

A

TRUSSES

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8
Q

TRUSSES OR FRAMES?
It is for smaller strictures (machines) having less no. of parts (bolted, riveted, or soldered). Subject to some loads

A

Frames

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9
Q

What are the variety of loads?(5)

A
  1. Dead load- weight of structural components
  2. Live load- weight of the occupants
  3. Wind load- + or - wind loads
  4. Earthquake load
  5. Snow load
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10
Q

It is a definite amount of matter (solids), the parts of which are just placed relative to each other.

A

non-rigid body

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11
Q

It requires a lesser magnitude of a force to cause its disassembly

A

Non-rigid body

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12
Q

It is exerted by one body on another via “push or pull”

A

Force/s

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13
Q

It is evident in interactions between bodies (pushing on a wall)

A

Force/s

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14
Q

TRUE or FALSE
Forces can occur through a distance when bodies are physically separated. For example/s: gravity, electricity, magnetism

A

True

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15
Q

True or False
A force is completely characterized by its magnitude, direction, and point of application

A

True.
Force is a vector quantity

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16
Q

True or False
Force could or could not cause a change in the state of motion of a body.

A

True.
In accordance with Newton’s 2nd law of Motion.

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17
Q

It is the one that causes a body to be stressed, stressed-out, deformed, and eventually lead into failure via the so called “stress”

A

Force/s

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18
Q

What are the classification of force? (2)

A

Applied or Non-applied forces

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19
Q

What is the most common type of force?

A

Gravitational force, resulting in what we call WEIGHT

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20
Q

What is the Principle of Transmissibility?

A

States that a force acting on a body can be applied anywhere along the force’s line of action without changing its effect on the body.

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21
Q

It is any positive or negative physical quantity that can be completely specified by its magnitude

A

Scalar

22
Q

It is any physical quantity that requires both a magnitude and a direction for its complete description

A

Vector

23
Q

It is a very real and noticeable force applied directly to an object

A

Applied force

24
Q

It is a very real and noticeable force applied directly to an object

A

Applied force

25
Q

It is a force that may not be as readily apparent or recognizable. Ex: gravitational force or simply weight

A

Non-applied Force

26
Q

These are forces besides the gravitational force that are applied externally to a given body, object, or structure.

A

External force

27
Q

It is the reason for the movement/non-movement, build-up of stress, deformation, or eventually failure.

A

External force

28
Q

Also known as “Reactive force” this as a result of the application external forces

A

Internal force

29
Q

This force will not exist without the application of external force

A

Internal force

30
Q

Individual isolation in a free-body diagram is possible using what method?

A

Method of members

31
Q

is any arrangement in space where there are two or more forces acting on a body or group of related bodies.

A

Force system

32
Q

What are the 10 classifications of force systems?

A
  1. Coplanar
  2. Non-coplanar
  3. Coplanar-collinear
    4.Coplanar-concurrent
  4. Non-coplanar, concurrent
  5. Non-coplanar, non-concurrent
  6. Coplanar, Parallel
  7. Non-coplanar, parallel
  8. Non-coplanar, non-parallel
  9. Force Couple system
33
Q

is a force system whose lines of action lie in one plane

A

Coplanar force system

34
Q

is a force system whose lines of action is in more than one plane

A

non-coplanar force system

35
Q

when the lines of action of all the forces of a system act along the same line and at the same plane

A

Coplanar-collinear force system

36
Q

forces in a system whose lines of action pass through a common point at a common plane, 2-dimensional

A

Coplanar-concurrent force system

37
Q

one whose lines of action are neither parallel nor intersect a common point at a common plane, 3-dimensional

A

Non-coplanar, concurrent force system

38
Q

one whose lines of action are neither parallel nor intersect a common point at a common plane, 3D view

A

Non-coplanar, non-concurrent force system

39
Q

a force system having the lines of action of its forces acting parallel with one another and in the same plane, 2D view

A

Coplanar, parallel force system

40
Q

a force system having the lines of action of its forces acting parallel with one another but does not lie on the same plane, 3D view

A

Non-coplanar, parallel force system

41
Q

a force system having the lines of action of its forces acting non-parallel with one another and also does not lie on the same plane, 3D view

A

non-coplanar, non-parallel force system

42
Q

a force system consisting of a pair of equal coplanar, oppositely directed parallel forces but are not collinear, 2D view

A

force couple system

43
Q

It is a simplified illustration of the figure (structure) in question, where the actual figure maybe represented by a simple line “FREED” from its supports

A

Free-body diagram (FBD)

44
Q

This only shows the action of forces such as applied forces (push/pull), non-applied (gravitational weight), and reaction forces (from supports)

A

Free-body diagram (FBD)

45
Q

TRUE OR FALSE
the weight of an object is always located at the object’s “center of gravity”

A

TRUE

46
Q

These are forms of supports belonging to the same kind and are always subjected to the force of “TENSION”

A

cables, wires, strings, and rope

47
Q

TRUE OR FALSE
tension is always opposite the direction of object/part it is supporting

A

True

48
Q

True or False
If an object is supported by one of the said supports, the tension value is less than to the object’s weight

A

False.
Tension value is EQUIVALENT (=) to the object’s weight

49
Q

it is a form of support that is used to prevent the free-fall of an object placed onto it

A

Plane surface

50
Q

a form of support that is used to provide linear mobility to an object or assembly

A

rollers

51
Q

a form of support that is used to provide rotational mobility to an object or assembly by serving as an object’s/assembly’s pivot (point of rotation)

A

hinges/pins

Statics (1 decks)

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