A horizontal bar of mass m1 and small diameter is suspended by two wires of length l from a carriage of mass m2 which is free to roll along the horizontal rails. If the bar and carriage are released from rest with the wires making an angle with the vertical, determine the velocity vb/c of the bar relative to the carriage and the velocity vc of the carriage at the instant when =0. Neglect all friction and treat the carriage and the bar as pa