Answer Happy

= In the device shown below, a yoke rotates about the Ê = axis. The yoke connects to a link AB at a rotational (pinned) connection with axis îį, such that the angle from the world Î direction to the pin axis is V. Link AB is rotated about the pin axis (î1) by an angle 8. Finally, the disk BC rotates about the link axis ( j2) by an angle 0. All of these angles are varying. The device has dimensions L AB = 0.71 m, and LBC = 0.62 m. At a particular instant, Y = -3°,0 = 45°, and © = 75°. The spin rates on the axes at that time are = -15 rad/s, À = 1 rad/s, and 0 = = -1 rad/s. The rates of change of the spin rates are ☺ = 0 rad/s?, i = 0 rad/s², and = 0 rad/s2, respectively. what is the component of the angular acceleration of link BC (that is, ABC), in the Ĵ direction (in units of rad/s?)? = = k, B (j2.j ki k2 O, A iji ji K, ki Drawing not to scale V