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EPHE 341 > Angular Kinematics - 1 > Flashcards

Angular Kinematics - 1 Flashcards

1
Q

What is angular kinematics

A

The study of motion of an object about a circular path exclusive of the influences of mass and force

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2
Q

When does angular motion occur

A

when all points on an object move in a circular path around the same axis

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3
Q

What is angular displacement

A

The angle that it moves through from its starting position relative to ax axis of rotation

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4
Q

What is used to represent angular displacement

A

Theta

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5
Q

What is absolute angular displacement

A

The position of an object relative to a fixed reference

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6
Q

What is relative angular position

A

The position of an object relative to a place or line that is capable of moving

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7
Q

What is relative angle

A

The angle formed between two limb segments

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8
Q

In anatomical position, what are all relative joint angles

A

0

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9
Q

What is an absolute angle

A

measured from an external frame of reference

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10
Q

What is angular distance represented by

A

Phi

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11
Q

What is angular distance

A

Length of angular pathway from start to finish

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12
Q

What is angular displacement? what is it represented by?

A

Angle between initial and final positions, theta

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13
Q

What are the 3 units typically used to describe angular motion

A

Revolution
Degree
Radian

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14
Q

What is a revolution

A

Angular motion which proceeds in one direction and returns to the start

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15
Q

What is a degree

A

One revolution contains 360 degrees

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16
Q

What is a radian

A

The ratio of the length of an arc to the length of the radii that enclose the arc

17
Q

What is 1 rad

A

The angle displaced at the center of a circle by an arc equal in length to the circle’s radius

18
Q

What is the magnitude in radians of one complete revolution

A

The length of the entire circumference divided by the radius pr 2pir/r

19
Q

1 radian = how many degrees?

A

360/2pi = 57.3

20
Q

what is 180 degrees in rad

A

pirad

21
Q

What is 90 degrees in rad

A

(pi/2)rad

22
Q

How do you convert from degrees to radians

A

multiply the number of degrees by pi and divide by 180

23
Q

Angular displacement, velocity and acceleration are vector quantities or scalar quantities

A

Vector

24
Q

What is the direction of Angular displacement, velocity and acceleration ?

A

Positive - counterclockwise Negative - Clockwise

EPHE 341 (17 decks)

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