BIOMECHANICS: angular motion& moment of inertia (section 2)

Question 1

what is the definition of angular motion?

Answer 1

the branch of biomechanics concerned with rotating bodies

Question 2

what is the definition of angular displacement?

Answer 2

the smallest change in angle between the start and finish point of a rotation.

Question 3

what is the definition of angular velocity?

Answer 3

the rate of change of angular displacement

Question 4

what is the definition of angular accelearation?

Answer 4

the rate of change of angular velocity

Question 5

what is the definition of angular momentum?

Answer 5

the quantity of angular motion that a rotating body possesses. it is the product of momentum of inertia and angular velocity

Question 6

what is the definition of momentum of inertia?

Answer 6

measurement of our reluctance to rotate

Question 7

what is the definition of direct force?

Answer 7

a force is applied through the COM, resulting in liner motion

Question 8

what is the definition of eccentric force?

Answer 8

a force is applied outside the COM, resulting in angular motion

Question 9

what is the equation for angular velocity?

Answer 9

angular displacement/ time taken (s)

Question 10

what is the equation for angular acceleration?

Answer 10

change in angular velocity/time taken (s)

Question 11

what is the equation for angular motion?

Answer 11

moment of inertia * angular velocity

Question 12

what is the units of measurement for angular displacement?

Answer 12

degrees

Question 13

what is the units of measurement for angular acceleartion?

Answer 13

rad/s2

Question 14

what is the units of measurement for angular velocity?

Answer 14

rad/s

Question 15

what two factors affect moment of inertia?

Answer 15

mass
distribution of mass