The figure (Figure 1) shows a model of a crane that may be mounted on a truck.A rigid uniform horizontal bar of mass m1 = 75.0 kg and length L= 6.00 m is supported by two vertical massless strings. String A is attached at a distance d= 1.50 m from the left end of the bar and is connected to the top plate. String B is attached to the left end of the bar and is connected to the floor. An object of mass m2 = 3500 kg is supported by the crane at a distance x= 5.80 m from the left end of the bar. Throughout this problem, positive torque is counterclockwise and use 9.80 m/s2 for the magnitude of the acceleration due to gravity.

A) Find TA, the tension in string A.

B) Find TB, the magnitude of the tension in string B.