BIOMECHANICS: angular motion& moment of inertia (section 2) Flashcards
what is the definition of angular motion?
the branch of biomechanics concerned with rotating bodies
what is the definition of angular displacement?
the smallest change in angle between the start and finish point of a rotation.
what is the definition of angular velocity?
the rate of change of angular displacement
what is the definition of angular accelearation?
the rate of change of angular velocity
what is the definition of angular momentum?
the quantity of angular motion that a rotating body possesses. it is the product of momentum of inertia and angular velocity
what is the definition of momentum of inertia?
measurement of our reluctance to rotate
what is the definition of direct force?
a force is applied through the COM, resulting in liner motion
what is the definition of eccentric force?
a force is applied outside the COM, resulting in angular motion
what is the equation for angular velocity?
angular displacement/ time taken (s)
what is the equation for angular acceleration?
change in angular velocity/time taken (s)
what is the equation for angular motion?
moment of inertia * angular velocity
what is the units of measurement for angular displacement?
degrees
what is the units of measurement for angular acceleartion?
rad/s2
what is the units of measurement for angular velocity?
rad/s
what two factors affect moment of inertia?
mass
distribution of mass
