Biomechanical Principles

• ƒÞ Law of Inertia
• ƒÞ Law of Acceleration
• ƒÞ Law of Action-Reaction

A body remains at rest or in constant linear velocity except when compelled by an external force to chang it stae

The linear acceleration of a body is directly proportional to the force causing it, take place in the smae direction in whihc the force acts, and is inversly proportional to the mass of the body

For every force there is an equal and opposite directed force.

Radius of gyration

distance between the axis of rotation and the center of mass

mass moment of inertia

(I) = mass X p2

Force = mass X acceleration

Torque (moment) = I X angular acceleration

Momentum = mass X velocity

Impulse = force (T) X time

Work = F (T) X displacement

Power = work / time

= F X d/t (or velocity)

Angular power = T X angular velocity (ù)