The system in the figure below is in equilibrium, with the string in the center exactly horizontal. Block A weighs 42.0 N, block B weighs 49.0 N, and angle ϕ is 31.0∘. What are Find (a) tension T1, (b) tension T2, (c) tension T3, and (d) angle θ. (a) Number Units (b) Number Units (c) Number Units (d) Number Units