Question

If link AB of the four-bar linkage has a constant counterclockwise angular velocity of 30 rad/s during an interval which includes the instant represented, determine the angular acceleration of AO (positive if counterclockwise, negative if clockwise) and the acceleration of point D.

80 mm L - - OAB 195 mm 130 130 mm 1 mm 1 Answers: DAO = rad/s2 ad = 0 + j) m/s2

Answer 1

dalulate the weloily at B- (30 x 0.15)5.%5 m/s Vв- сддвх вс calulate ang ular veloüly BC 5.85 : 30 had /s BC O195 Yalulati ang ular welo aty f OA Wолх оA 3D АСсхивс 60 Jad/s WOA 130=0.260 x 3O vaccluation at A- aA aBtan/B [(annt (a las)nt (as)] [na)n + (a Eyucta coe of: (a)t-23Y 468 (aB) 23 m/s2 Eyuat ce can)t = 175.5 75.5 (an)t

valulate ang ular aueleation A0- bXAO- lan)t A/O |KAD valulate aueluaton at D Ap= (ap)n +(aD) CD х (ав)n) + CB CB a75x (-231 5 [-2175-330 m/s