Lecture 12
Free Body Diagram
A visual representation of force
The direction is reflected by the arrowhead
The magnitude is illustrated by length of line segment
Individual objects are isolated from one another
Be clear about what is being analyzed
H
Lecture 17
Mechanical Angular Work
The product of torque and the angular distance
Measured in Nm (which is related to the linear measurement of J)
Applying Torque to Rotate a System
Angular Power
The amount of angular work done per unit of time
The
Lecture 19
Equilibrium
A force applied to a system causing rotation
A simple machine that can multiply the mechanical force that can be applied to another system
There are three kinds of levers
First class, Second class, and Third class
Each lever has:
Ri
Lecture 16
Angular Kinetics
A torque is a force that produces rotation (moment of force)
The effect of the torque is dependent upon;
The magnitude of the force
The larger the applied force, the bigger the rotational change
Point of application
The dis
Lecture 11
Linear Kinetics
Linear kinetics will explain what causes, alters, and prevents translational movements
A force is a push or pull producing a change (in motion)
The effect of the force is dependent upon;
The magnitude of the force
Point of appli
Lecture 14
Work, Power, and Energy
Mechanical Work
Amount of energy transferred by a force acting through a distance
How much force did it take to move the system
Work (W) = Force x displacement
Units: Joules (J)
Positive Work
Movement occurs in the same
Lecture 3
Linear Motion
All parts of the body moving in the same direction
Translation
Rectilinear Motion
Movement along a straight line
Curvilinear Motion
Movement along a curved path
Some quantities are expressed by a number only
SCALAR quantiti
Lecture 9
Kinematic Analysis
Planning Motion Analysis
High speed analysis requires good lighting for clear pictures
Light source to illuminate the reflective markers
Shades reflectors to redirect light (i.e. sun blockers)
The camera position is key
W
Lecture 6
Linear movements are generated by angular movements
Angular Motion
A body moves along a circular path
Rotations that are fixed at one point
A body revolving around a central line or point
Axis of Rotation
Point which the system rotates arou
Lecture 2
Kinesiology
Anatomy
The structure of the body
Physiology
The function of the body
Motor Learning
How individuals acquire and develop skills
Biomechanics = Physics + Anatomy
Mechanics is a branch of physics
The laws of motion
How forces are g
SCHOOL OF KINESIOLOGY
The University Of British Columbia
KIN 151: Biomechanics I
Instructor:
Email:
Phone:
Office:
Office Hours:
Dr. Paul Kennedy
[email protected]
604-822-9204
Osborne Centre Unit 1, Room 215
Whats that? Please get in touch with me to f
KIN 151: BIOMECHANICS I
s = l2 l 1 / t 2 t 1
pace = t2 t1 / l2 l1
v = d 2 d 1 / t2 t1
a = v 2 v 1 / t2 t1
v2 = v1 + at
v22 = v12 + 2ad
d = v1t + at2
= 2 1 / t2 t1
= 2 1 / t2 t1
= 2 1 / t2 t1
at = r
a t = v 2 v 1 / t2 t1
ar = v2 / r
atotal = ar2 + at2
l
KIN 151: BIOMECHANICS I
Test 2 Review
Here is an overview of some of the material that will be covered on test 2.
Chapter 3: Kinetic Concepts for Analyzing Human Motion
Define and apply the terms mass, inertia, force, gravity, external forces, internal f
KIN 151: BIOMECHANICS I
F = ma
wt = mag
T = Fd
F s = sR
F k = kR
M=mv
M1 = M2
m1v1 + m2v2 = (m1 + m2) v1 and 2
Impulse = F t
Ft = mv2 mv1
Fc = mv2 / r
W = Fd
P=W/t
PE = magh
KE = mv2
C = PE + KE
Fx = 0
Fy = 0
T= 0
Fx - max= 0
Fy - may = 0
T = I
I = m