Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biomechanics - 2330 > Fundamental Concepts > Flashcards

Fundamental Concepts Flashcards

1
Q

what is the SI for metre

A

m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

SI for kilogram

A

kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

SI for second

A

s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

SI for ampere and what is it

A

A - electric current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

SI for Kelvin and used for what

A

K - tempature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

SI for mole and what is it

A

mol - amount of substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

SI for candela and what is it

A

cd - light intensity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

prefix for 1000

A

kilo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

prefix for 1

A

none

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

prefix for 0.01

A

centi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

prefix for 0.001

A

milli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what type of unit and represented by what is length

A

bass
-metre (m)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what type of unit and represented by what is is area

A

derived
-sqaure meter (m2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what type of unit and represented by what is linear velocity

A

derived
-metre per second (m/s)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what type of unit and represented by what is mass

A

bass
-kilogram (kg)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what type of unit and represented by what is force

A

derived
-newton (N (kg*m/s2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what type of unit and represented by what is time

A

bass
-second (s)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what type of unit and represented by what is moment of force

A

derived
-newton metre (N*m)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what makes a derived unit

A

2 bass units together

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what is the significant digits slide rule

A

limit our answers to 3 significant digits
-unless the first digit is a 1
-then 4 significant digits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what is the menaing behind the significant figures

A

digits that carry meaning contributing to its measurement precision

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what are the 5 rules of significant digits

A
  1. all non-zero figures are significant
  2. zeroes between non-zero figures are significant
  3. leading zeroes are never significant
  4. in a number with a decimal point, trailing zeroes are significant
  5. in a number without a decimal point, trailing zeroes are not significant
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what are the 3 bass units of measure and why

A

space, mass, time
-form foundation upon which other mechanical dimensions can be derived
-quantities are assumed to be independent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

volume is measured in what 2 ways

A

m3
or
L(1m3=1000L)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

any position in space can be defined by what 3 things

A

3 coordinates representing 3 lengths along 3 axes (x, y, and z)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

mass determines what 2 things of an object

A

-strength of its mutual gravitational attraction to other bodies
-resistance to acceleration by a force (linear - mass, and rotational - moment of inertia)
-mass-energy content of a system

27
Q

what is inertia

A

reluctance of a body to changes in motion

28
Q

what is the field of anthropometry

A

measurement of human body mass and its distribution
-dimensions such as height, wieght, segment legnth, body density

29
Q

what is body segment parameters

A

sub-area of anthropometry
-segment mass, location of the segment centre of mass, segment moment of intertia

30
Q

in newtonian mechanics, what is time assumed to be

A

a constant, independent of speed or location

31
Q

what are the 4 fundamental quanitties of biomechanics

A

space
mass
time
force

32
Q

how to define force

A

something that will change the velocity and acceleration of an object, depending on its mass (unless another force of equal or opposite then they will compete with each other)
-PUSH OR PULL

33
Q

what is gravitational forces

A

gravitational attraction between the earth and bodies nearby
(object with a mass attracts another object with mass)

34
Q

what is frictional force

A

ressits motion when surface of one object comes in contact with surface of another

35
Q

what is tensile force

A

force that tends to pull objects apart

36
Q

what is compressive force

A

tends to squeeze the object

37
Q

what is normal force

A

force that surfaces exert to prevent solid objects from passing through each other
-perpendicular to force and tangential force

38
Q

what is applied force

A

froce that is applied to an obect by a person or another object

39
Q

idea behind spring force in realtion to the human body

A

store and return energy and movement in our tissues

40
Q

what is the idea of the unit of force newton (N)

A

required force to accelerate 1kg of mass at a rate of 1m/s2

41
Q

what are orthogonal axes

A

perpendicular (right angles)

42
Q

what is frame of reference

A

system of 3 orthogonal axes, that permit measurement of position and orientation (angle) of a body in space

43
Q

what are the 2 types of frames of reference

A

anatomical (cardinal, relative)
newtonian (absolute)

44
Q

what does the anatomical frame of reference define and helps what

A

defines:
-position and orientation relative to the body
-reference frame is located within and moves with the body
helps:
-intuitive describption of position/orientation

45
Q

what does the newtonian frame of reference define and it helps with what

A

defines:
-positions and orientations in absolute terms
-relative to a fixed origin (usually the ground)
helps:
-calculations of position/orientation

46
Q

what anatomical frame of reference defines movement in the saggital plane

A

mediolateral axis

47
Q

what anatomical frame of reference defines movement in the transverse plane

A

vertical axis

48
Q

what anatomical frame of reference defines movement in the frontal plane

A

anteroposterior axis

49
Q

what is centre of mass

A

point in space where the mass of the bodies particles are concentrated in
-point at which a body can be balanced

50
Q

what are 2 important thigns to know about an object and bodies centre of mass that may not be obvious

A

-not necessarily at the centre of an object
-can lie outside of the body

51
Q

when does the centre of mass move

A

when segments of body are moved

52
Q

what are 6 factors that affect the location of the whole-body centre of mass

A

age
sex
body mass distribution
external loads
amputation
atrophy

53
Q

explain the right hand thumb rule

A

if current carrying conductor is imagined to be held in your right hand such that the thumb points along the direction of current then the direction of the wrapped fingers will give the direction of magnetic field lines
(fingers wrapped towards up=positive, down=negative)

54
Q

what is a scalar

A

quantity that has a magnitude and possibly a sense (+ or -)

55
Q

what is a vector

A

a quantity that has a magnitude, sense, and orientation
-obey the laws of vector addition

56
Q

what is the parallelogram law for vector addition

A

can add up vectors in any order as long as the they are tip to tale (touch back end and tip of vectors)

57
Q

in the vector addition law, being able to add them in ay order demonstrates what property

A

commutative

58
Q

in the vector addition law, being able to add 3 or more vectors in any order demonstrates what property

A

associative

59
Q

what are the components wee need to use vector addition

A

2 sides of the triangle that are consistent with our x and y axes

60
Q

what are the 2 ways to represent a vector in space

A

rectangular (cartesian) coordinates
polar coordinates

61
Q

how does the rectangular coordinates work and it helps with what

A

WORKS
-reports x and y coordinates of a point (P) in space, relative to origin (0,0)
-P=(x,y)
HELPS
-easier for calculations

62
Q

how does the polar coordinates work and it helps with what

A

WORKS
-reposrts a distance (r) from an origin (0,0) and its angle with respect ot the right horizontal (positive x-axis)
-P=(r,0)
HELPS
-more intuitive

63
Q
A

Biomechanics - 2330 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions