Constants Part A The figure (Figure 1) shows a model of a crane that may be moun

Question

Constants Part A 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 90.0 kg and length L 5.80 m is supported by two vertical massless strings String A is attached at a distance d= 1.40 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 2000 kg is supported by the crane at a distance 5.60 m from the left end of the bar Find TA, the tension in string A. Express your answer in newtons using three significant figures. View Available Hint(s) Throughout this problem, positive torque is counterclockwise and use 9.80 m/s for the magnitude of the acceleration due to gravity Submit gure 1 of 1 Part B Find TB, the magnitude of the tension in string B Express your answer in newtons using three significant figures View Available Hint(s) Im TB- Submit

Explanation / Answer

a)

The net torque about point B is zero

TAd -m1g(L/2)-m2gx =0

TA*1.4 -90*9.81*(5.8/2) -2000*9.81*5.6=0

TA=80309 N

b)

The Sum of forces in Y-direction is zero

-TB+TA-m1g-m2g=0

TB=80309-90*9.81-2000*9.81

TB=59806 N

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