From the crane analysis, it can be seen that stress is applied on the upper beam and forces are acting from the centre of the beam, the load attached at the end and the weight of the winch. The diagram shows the forces acting on the beam and also modelling the vertical support as just a support and no force coming from there, the force acting vertically from the hydraulic actuator can then be determined in order to know how much force it would take to lift the beam with all the forces acting on it present assuming the weight of the beam is 200kg, the weight of the load is about 1000kg and the weight of the winch is 6kg. All these forces have been multiplied by 9.81 i.e. approximately 10 in order to find their forces due to gravitational effect and the moment has been calculated. The height of lift is also taken into consideration and regardless of the height, a formular has been put in place to determine the lift force.
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