Biomechanics Flashcards Preview

Anatomic Kinesiology > Biomechanics > Flashcards

Flashcards in Biomechanics Deck (17):
1

Biomechanics

Study of movement and forces of living things

2

Statics

Study of systems that are in a constant state of
motion

3

Dynamics

Study of systems in motion with acceleration

4

Kinematics

Description of motion and includes
– E.g., displacement, velocity, acceleration

5

Kinetics

Causes of motion
– E.g., force, torque, power, work, energy
(Kinetics are responsible for causing kinematics)

6

Mechanical Advantage (MA)

Load (external/resistance force) divided by effort (muscle force) MA = Load/Effort (resistance/force)

7

Effort Advantage

Using a relatively small effort to move a
much greater load

8

Motion Advantage

Move one point of an object over a small distance
to result in a large amount of movement of
another point on object (i.e., body segment)

9

Machines found in body

Three types: Levers, pulleys, wheels & axles

10

Axis

Point of rotation

11

Force

Effort

12

Resistance

Location of external force

13

1st class lever

Axis (A) somewhere between force (F) & resistance (R) (FAR) Teeter-totter

14

2nd class lever

resistance (R) somewhere between axis (A) & force (F) (ARF) Wheelbarrow

15

3rd class lever

force (F) somewhere between axis (A) & resistance (R) (AFR) Elbow joint/dumbbell curl.

16

Torque

force x moment (lever) arm [force x distance]

17

Lever Arm/Moment Arm

Perpendicular distance from the force to the axis of rotation.