Lecture 13 - Relationship between Linear and Angular Kinematics

Question 1

what is the difference of linear and angular kinematics units

Answer 1

linear = degrees

angular = radians

Question 2

what is Pi

Answer 2

the ratio of a circles circumference to its diameter (diameter = 2 x radius)

Question 3

double your radius, double your …

Answer 3

arc length

Question 4

what is the equation of arc length

Answer 4

change in angle x radius (angle must be in radians)

Question 5

how to convert angle from degrees to radians (this is important for angular kinematics and calculating arc length)

Answer 5

arc length = change in angle (Pi rad / 180)

Question 6

a short change in muscle length produces …

Answer 6

a larger movement at the end of limb

Question 7

increase the speed of an object by increasing its

Answer 7

radius

Question 8

how is linear and angular speeds different

Answer 8

linear speeds = end of segment is going to be faster than those closer to the segment

angular speeds = the whole segment is the same, like your arm rotating would all the same angular velocity

Question 9

what is the equation of arc length

Answer 9

d = change in angle x radius

Question 10

angular velocity can produce

Answer 10

linear velocity at the end of the limb

Question 11

what is the equation for tangential speed

Answer 11

vT = w r

Question 12

how to change from rad to degrees and what equation do we use it for

Answer 12

times by 57.3

use for finding linear speed from angular speed

180 / pi

Question 13

how to go from degrees to rad

Answer 13

pi / 180