# For the crossed four bar mechanism shown in Fig.1, The dimensions of various links are: CD = 65 mm; C A = 60 mm; DB = 80 mm; and AB=55 mm. Find the angular velocity and angular accelerations of the links A B and DB, if the crank CA rotates at 100 rpm. in the anticlockwise direction. USING RELATIVE VELOCITY METHOD

Question-AnswerCategory: Theory Of MachinesFor the crossed four bar mechanism shown in Fig.1, The dimensions of various links are: CD = 65 mm; C A = 60 mm; DB = 80 mm; and AB=55 mm. Find the angular velocity and angular accelerations of the links A B and DB, if the crank CA rotates at 100 rpm. in the anticlockwise direction. USING RELATIVE VELOCITY METHOD

For the crossed four bar mechanism shown in Fig.1, The dimensions of various links are: CD = 65 mm; C A = 60 mm; DB = 80 mm; and AB=55 mm. Find the angular velocity and angular accelerations of the links A B and DB, if the crank CA rotates at 100 rpm. in the anticlockwise direction. USING RELATIVE VELOCITY METHOD USING RELATIVE VELOCITY METHOD    Therefore
Angular velocity of AB = 10π rad/sec (CCW)
Angular velocity of DB = 5.625π rad/sec (CCW)
Angular acceleration of AB = 1000(π)² rad/sec²
Angular acceleration of DB = (7000/55)π² rad/sec²