Intro
The application of mechanical principles to the study of biological systems defines
Biomechanics
Force =
Mass * Acceleration
Rotational
Finish this sentence: "For every action, there is an..."
equal and opposite reaction
What are the 4 functions of Machines? Example for each?
1. Balance forces - Seesaw
2. Enhance force so less force is needed - Crowbar
3. Enhance ROM and speed - LaCrosse stick
4. Alter direction of applied force - Pulley
Motion that occurs when all points on a body move in a curved line.
Curvilinear
Mechanical advantage =
length of force arm / length of resistance arm
The most common lever in the human body
3rd class
Name of Newton's first law.
Law of inertia
General motion is a combination of...
Linear and angular motion
The main source of force in the human body
Muscles
Most common way of increasing torque
Extending the lever arm
A force acting over the area of contact between two surfaces defines...
Friction
DD: Constant velocity systems would fall under this sub-division of Biomechanics.
Statics
DD: This type of lever always has good mechanical advantage
2nd class
The addition of a pulley increases the mechanical advantage of a system by...
1
The formula for Newton's second law. (Specific to the law)
acceleration = Force / mass
On most people the center of gravity lays here at rest.
1-2 inches above the naval
This type of internal force occurs when force is applied on a structure in two opposing directions.
Shear
If you are spinning an axle, the smaller that axle is the ______________ the wheel will spin.
Faster
Based on Newton's 3rd law, when taking off for a vertical jump what direction will the ground reaction force be?
Up towards the body