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Biomechanics > Test 1 > Flashcards

Test 1 Flashcards

1
Q

calculate weight

A

F=ma

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2
Q

Newtons first law

A

object rest stays at rest until force acts on it

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3
Q

Newtons second law

A

F=ma

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4
Q

Newtons 3rd law

A

every force has equal but opp force acting for every action equal but opposite reaction

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5
Q

5 types mechnical loads/forces

A

compression, tension, bending, torque, friction

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6
Q

compression

A

2 forces either side object

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7
Q

tension

A

2 forces pulling either side object

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8
Q

bending

A

compression inside tension outside

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9
Q

torque

A

force against and around fixed location

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10
Q

friction

A

force between 2 objects like trying slide object across another

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11
Q

biomechanics

A

analysis of mechanical systems of humans.. application principal mechanics (analysis action forces on moving things) to living things

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12
Q

kinetics

A

action of forces looking at forces and how it acts (force comes from muscle humans energy atp to generate that force force muscle exert force on limb which exerts force on outside environement)

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13
Q

kinematics

A

study of motion with respect to space and time (velocity, speeding up, slowing down)

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14
Q

kinesiology

A

study human movement

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15
Q

Normal force if flat on ground

A

weight of objects

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16
Q

normal force if at angle

A

portion weight perpendicular to slope

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17
Q

center of mass

A

point in body where mass equally distributed.. balance pint

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18
Q

center of gravity

A

affect due to acceleration of gravity on your COM

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19
Q

rectilinear motion

A

straight line

20
Q

angular motion

A

fixed axis and attached object rotates around

21
Q

curvilinear motion

A

motion in a curved line

22
Q

distance

A

total distance traveled from point A to B

23
Q

displacement

A

straight line form A to B how far from one to other traveled

24
Q

Speed

A

distance/time m/s

25
Q

velocity

A

displacement/time m/s

26
Q

mechanotransduction

A

process by which mechanical forces cause tissue adaptation apply force to muscles, bones, tendons to help adapt

27
Q

acceleration due to gravity in space

A

is 0 so there is a lot of atrophy because body weight is actually stimulus for your muscles and bones adapting

28
Q

leg muscle ostrich vs human

A

humans have muscle and oterages do not making them lighter

29
Q

ostrich legs and running

A

lower mass in leg allows for higher frequency because swing time is shorter faster and stride frequency is higher

30
Q

ostrich faster because

A

stride length is longer so go futher and swing time faster because difference lower limb mass

31
Q

fastest land animal

A

cheetah (hawk that dives faster)

32
Q

fastest sea animal

A

sword/sail fish

33
Q

Acceleration

A

Change velocity over change time

33
Q

slowest sea creature

A

sea cucumber

34
Q

Ski problem f net

A

Mass x acceleration down slope

35
Q

Theta in ski

A

90- given angle

36
Q

Fp

A

Sin theta. Opp/weight

37
Q

Fh

A

Cos theta. Adj/weight

38
Q

Friction

A

Coefficient x normal force (fp)

39
Q

Fnet=

A

Fh-f

40
Q

Yield point bone

A

Sooner and much higher for bone

41
Q

ER muscle

A

Much larger

42
Q

Yp is

A

Injury or strain

43
Q

Ufp

A

Ultimate failure point and full injury break or tear

44
Q

Raise yp

A

Decrease likelyhood damage/injury

45
Q

Order of deformation curve

A

Er. Yp pr ufp

Biomechanics (4 decks)

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