Collars A and B are constrained to slide along the guides shown and are connected by a bar...

Collars A and B are constrained to slide along the guides shown and are connected by a bar with length L = 0.75 m. Letting θ = 45°, determine the angular velocity of the bar AB at the instant shown if, at this instant, υB = 2.7 m/s.

Figure P6.58