Solution of task 5.4.2 from the collection of Kepe OE

Solution of task 5.4.2 from the collection of Kepe OE

5.4.2
To the vertex A of the tetrahedron OABD is applied the force F1 = 2H, parallel to the axis Oz, and to the vertex D - the force F2 = 8.6H. Determine the principal vector of this force system if the distances OA = OB = OD = 5 m (Answer 10.1)