Chapter 15.3, Problem 15.CQ6P

Bar BDE is pinned to two links, AB and CD. At the instant shown, the angular velocities of link AB, link CD, and bar BDE are ${\omega }_A{}_B$, ${\omega }_{CD}$, and ${\omega }_{BDE}$, respectively. Which of the following statements concerning the angular speeds of the three objects is true at this instant?
a . ${\omega }_A{}_B={\omega }_{CD}={\omega }_{BDE}$
b. ${\omega }_{BDE}>{\omega }_{AB}>{\omega }_{CD}$
c. ${\omega }_A{}_B={\omega }_{CD}>{\omega }_{BDE}$
d. ${\omega }_A{}_B>{\omega }_{CD}>{\omega }_{BDE}$
e. ${\omega }_{CD}>{\omega }_{AB}>{\omega }_{BDE}$
Fig. P15.CQ6