P6 Given: =const. Determine: the velocities and the accelerations of the points A, B, C, D of the chair. P7 O=A B P8 P9 P10 00 /4 P X B X' Given: L-shaped bar OAB, = const, OA=1, AB = 21. Determine: the velocity and the acceleration of the point B of the bar. /4 212 A B Given: AB=1R, VA=u= const. Determine: a) the instantaneous center of rotation; b) = ? c) the velocities of the points B and C, for an arbitrary angle 0. Given: 1, = 0, and = 20. Determine: a) VA, VB, 2, 3 = ? (graphical representation and scalars); b) a =? (graphical representation and scalar). Given: 7, = 0, and = 20%. Determine: a) VA, VB, =? (graphical representation and scalars); b) a? (graphical representation and scalar).