(a) (b) The shaper mechanism shown in Figure B1 is designed to give a slow cutting stroke and a quick return to a blade attached to the slider at C. C WAB B A Figure B1: Shaper mechanism = 45, WAB= 4 rad/s, a=300 mm, b=125 mm Determine using the relative velocity method, the velocity of the slider [15] block C at the instant 0 =60 if the link AB is rotating at 4 rad/s. Determine using the instantaneous centre of zero velocity, the velocity [10] of the slider block C at the instant 0 =60 if the link AB is rotating at 4 rad/s.