Term
| vectors: what is the point of application |
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Definition
| object the force is acting on |
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Term
| vectors: what is direction |
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Definition
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Term
| vectors: what is magnitude |
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Definition
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Term
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Definition
| vector force that has point of application, direction, and magnitude |
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Term
| what is center of gravity |
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Definition
| hypothetical point at which all mass is centered |
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Term
| where does the line of gravity fall with a large base of support |
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Definition
| within the base of support |
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Term
| if the line of gravity stays within the base of support what happens to the person |
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Definition
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Term
| what happens to the person when the line of gravity falls outside the BOS |
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Definition
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Term
| when does static equilbrium occur |
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Definition
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Term
| when does dynamic equilibrium occur |
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Definition
| when a body is in motion with eternal forces applied |
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Term
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Definition
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Term
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Definition
| force acting through a displacement in the direction of hte force |
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Term
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Definition
scalar measurement equal to the product of force and displacement
W=F*D |
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Term
| if the force is not acting entirely through the direction of the motion, the linear equation changes to what |
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Definition
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Term
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Definition
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Term
| what is the rate of linear work |
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Definition
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Term
| What is the formula for power |
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Definition
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Term
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Definition
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Term
| what is the formula for linear momentum |
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Definition
p=m*V
m = mass
v = velocity |
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Term
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Definition
| quantity of angular motion |
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Term
| What is the formula for angular momentum |
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Definition
L=i*w
i=moment of inetria
w = angular velocity |
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Term
| what is interia in relation to angular momentum |
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Definition
| inertia is resistance to change in angular state of motion |
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Term
| How do ou increase momentum |
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Definition
| increase the mass or velocity |
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Term
| what is conservation of momentum |
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Definition
| how a system quantity of motion is conserved, gained, lost during a given period |
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Term
| what happens to momentum in a closed system when two objects collide |
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Definition
| the total momnetum remains the same |
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Term
| what happens to the bodies of a perfectly plastic collision |
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Definition
| bodies stick together and move with common velocity after impact with no loss of energy |
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Term
| what happens to bodies with a perfectly elastic collision |
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Definition
| bodies rebound off each other with no loss of energy |
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Term
| what is the coefficient of restitution |
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Definition
| loss of separation velocity, how we measure the loss of energy in an elastoplastic collision |
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Term
| what is the coefficeint of restitution as a ratio |
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Definition
| ratio between the post-collision velocity of 2 bodies and pre-collision velocity |
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Term
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Definition
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Term
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Definition
| force causing a rotation about a joint axis |
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Term
| how is torque/moments of force calculate |
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Definition
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Term
| what are inverse dynamics used to determine |
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Definition
| the jt moments as a product of the transmissino of the GRF up the kinetic chain |
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Term
| inverse dynamics should equate to what in relation to muscles |
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Definition
muscle moments
EMG of the mm during the activity |
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Term
| 2 types of biomechanical modeling |
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Definition
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Term
| example of physical biomechanical modeling |
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Definition
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Term
| example of mathematical biomechanical modeling |
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Definition
| represent all possible motions |
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Term
| the models can be controlled for what to best represent changing situations |
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Definition
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Term
| what are deformable body models used for |
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Definition
tissues that undergo measureable deformation
ex lungs |
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Term
| what are rigid body models used for |
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Definition
| represent tissues with little to no deformation |
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Term
| what are continuum mechanical models used for |
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Definition
| model of molecular characteristics |
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Term
| what is a finite element model used for |
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Definition
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Term
| if forces and moments are available we use what solution to predict details from the model |
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Definition
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Term
| using measured kinematics to predict details is called what |
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Definition
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Term
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Definition
rheological
linear spring
dashpot
frictional component |
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Term
| Tissue models: rheological model measures what |
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Definition
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Term
| Tissue models: rheological models utilize what |
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Definition
| stress, strain and strain rate |
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Term
| Tissue models: linear spring represents what |
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Definition
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Term
| Tissue models: dashpot models what |
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Definition
| the viscous aspects of tissue |
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Term
| Series elastic models (2) |
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Definition
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Term
| What do series elastic models represent |
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Definition
| anatomic components that are in a row (all in line, bone, tendon, mm, tendon, bone) |
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Term
| what do parallel models represent |
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Definition
| parallel aspects such as the overlapping mm fibers |
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Term
| parallel models discussed in notes |
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Definition
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