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