Forces

In point O acts three orthogonal forces: F1 = 20 N, F2 = 7 N and F3 = 19 N. Determine the resultant of F and the angles between F and forces F1, F2 and F3.

Correct result:

F =  28.5 N
α =  45.4 °
β =  75.8 °
γ =  48.1 °

Solution:

F=202+72+192=28.5 N
α=arccos(20F)=45.4
β=arccos(7F)=75.8
γ=arccos(19F)=48.1



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