Basics and Terminology 3

Question 1

The path of motion around a fixed axis and therefore a circular path is called:

Answer 1

Angular motion

Question 2

Time rate of change of angular position of a rotating body is called:

Answer 2

Angular velocity

Question 3

Time rate of change of angular velocity of a rotating body is called:

Answer 3

Angular acceleration

Question 4

The point about which a body rotates is called:

Answer 4

Axis of rotation

Question 5

Perpendicular distance from an axis of rotation to a line along which a force acts is called:

Answer 5

lever arm

Question 6

What are two other names for lever arm?

Answer 6

Force arm

Moment arm

Question 7

Product of force and lever arm is called:

Answer 7

torque

Question 8

The tendency of an eccentric (off center) force to rotate an object around and axis is called:

Answer 8

torque

Question 9

Torque applies to what objects?

Answer 9

rotating

Question 10

Torque directly applies to what else?

Answer 10

Motion of the human body

Question 11

How is torque related to the human body?

Answer 11

Muscles apply force to bone for us to move

Question 12

Muscle forces are _____ and therefore we move because of torque

Answer 12

eccentric

Question 13

The ______ of the muscle is where force is applied.

Answer 13

Insertion

Question 14

This consists of a rigid or semi-rigid object (_____) that is capable of rotating around and axis (_____)

Answer 14

Lever system
(lever)
(fulcrum)

Question 15

The force is between the effort and the load/resistance. Lever System?

Answer 15

Type 1 Lever

First Class

Question 16

Examples of Type 1/First Class levers

Answer 16

See saw, claw hammer

Question 17

The load/resistance is between the fulcrum and the effort. Lever system?

Answer 17

Type 2 Lever

Second Class

Question 18

Examples of type two Lever systems.

Answer 18

Stapler, wheel barrow

Question 19

The effort is between the fulcrum and the load/resistance. Lever system?

Answer 19

Type 3 Lever

Third Class

Question 20

Examples of Type 3 Lever?

Answer 20

Fishing rod, broom, tweezers

Question 21

If the fulcrum is in the middle of the lever, which force has advantage?

Answer 21

Neither force has advantage, the ratio is 1

Question 22

Ratio of the motive of force (effort) to a given resistance force is called what?

Answer 22

Mechanical advantage

Question 23

Mechanical Advantage (MA) =

Answer 23

Mm/Mr (motive force divided by resistance force)

Question 24

Greater than 1 do you gain or lose mechanical advantage?

Answer 24

gain

Question 25

Chiropractic adjustment mechanical advantage is less than 1 so what do we do?

Answer 25

Speed and stance

Question 26

Is type 1 lever in the body common?

Answer 26

no

Question 27

Example of type one lever in the body?

Answer 27

Neck and head

Question 28

Example of type 2 lever in the body?

Answer 28

Standing on balls of feet

Question 29

Type 3 lever in the body?

Answer 29

Biceps with hand lifting something.