(Solved): 13 kN heavy 9.0 m long homogeneous crane can rotate about frictionless crane shaft. A cable pulls up ...

13 kN heavy 9.0 m long homogeneous crane can rotate about frictionless crane shaft. A cable pulls up the crane, which lifts a box weighing 7.0 kN. The crane is stationary and forms an angle of 60° with the ground and an angle of 30° with the cable. (a) Find the tension in the cable. (b) Find the horizontal and vertical components of the force exerted by the crane shaft on the crane