If rod cd is rotating with an angular velocity cd = 4 rad/s, determine the angular velocities of rods ab and bc at the instant  = 70, bc is horizontal, and cd is vertical. [you are advised to use instantaneous center (ic) of zero velocity approach for link bc]

“when two plates carrying continents collide, the continental crust buckles and rocks pile up, creating towering mountain ranges. when an ocean plate collides with another ocean plate or with a plate carrying continents, one plate will bend and slide under the other. this process is called subduction. “ i found this on google i hope it