(Solved): Bars A B and C D are uniform and each weighs 7 lb . The coefficient of static friction at surface ...

Bars A B and C D are uniform and each weighs 7 lb . The coefficient of static friction at surfaces A and B is the same. If the coefficient of static friction for all surfaces is 0.6 , determine the value of Q that causes impending motion of bar AB to the left. DRAW FBD