The figure shows a model of a crane that may be mounted on a truck. A rigid uniform horizontal bar of mass m1= 75.00kg and length L = 5.500m is supported by two vertical massless strings. String A is attached at a distance d = 1.900m 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= 3500kg is supported by the crane at a distance x = 5.300 m from the left end of the bar.
A) Find TA, the tension in string A.
B) Find TB, the magnitude of the tension in string B.