Flashcards in Basics and Terminology 3 Deck (29):
The path of motion around a fixed axis and therefore a circular path is called:
Time rate of change of angular position of a rotating body is called:
Time rate of change of angular velocity of a rotating body is called:
The point about which a body rotates is called:
Axis of rotation
Perpendicular distance from an axis of rotation to a line along which a force acts is called:
What are two other names for lever arm?
Product of force and lever arm is called:
The tendency of an eccentric (off center) force to rotate an object around and axis is called:
Torque applies to what objects?
Torque directly applies to what else?
Motion of the human body
How is torque related to the human body?
Muscles apply force to bone for us to move
Muscle forces are _____ and therefore we move because of torque
The ______ of the muscle is where force is applied.
This consists of a rigid or semi-rigid object (_____) that is capable of rotating around and axis (_____)
The force is between the effort and the load/resistance. Lever System?
Type 1 Lever
Examples of Type 1/First Class levers
See saw, claw hammer
The load/resistance is between the fulcrum and the effort. Lever system?
Type 2 Lever
Examples of type two Lever systems.
Stapler, wheel barrow
The effort is between the fulcrum and the load/resistance. Lever system?
Type 3 Lever
Examples of Type 3 Lever?
Fishing rod, broom, tweezers
If the fulcrum is in the middle of the lever, which force has advantage?
Neither force has advantage, the ratio is 1
Ratio of the motive of force (effort) to a given resistance force is called what?
Mechanical Advantage (MA) =
Mm/Mr (motive force divided by resistance force)
Greater than 1 do you gain or lose mechanical advantage?
Chiropractic adjustment mechanical advantage is less than 1 so what do we do?
Speed and stance
Is type 1 lever in the body common?
Example of type one lever in the body?
Neck and head
Example of type 2 lever in the body?
Standing on balls of feet