Some important definitions Displacement R=Reio Linear displacement:All particles of a body move in parallel planes and travel by same distance is known as linear displacement Angular displacement:A body rotating about a fixed point in such a way that all particles move in circular path is known as angular displacement axis 2 R Real axis ME371 Design Manufacturing ll Some important definitions Velocity-Rate of change of displacement is velocity.Velocity can be linear velocity of angular velocity. First order: d(Re)=Re+R(e"j0)=Re+ROje d de Angular Velocity:@ dt yImaginary axis Linear Velocity:V=R R Real axis R 22 ME371 Design & Manufacturing II Displacement Linear displacement: All particles of a body move in parallel planes and travel by same distance is known as linear displacement Angular displacement: A body rotating about a fixed point in such a way that all particles move in circular path is known as angular displacement Some important definitions j R e  R  Velocity - Rate of change of displacement is velocity. Velocity can be linear velocity of angular velocity. Some important definitions First order: ( ) ( )= d j jj j j R e Re R e j Re R j e dt             Angular Velocity: d dt    Linear Velocity: d dt V  R