Mass point

Two equal forces of 30 Newtons act on a mass point. Find the magnitude of the resultant force if these forces form an angle of 42°.

Correct answer:

F =  56.0148 N

Step-by-step explanation:

F1=30 N F2=F1=30 N α=42   β=180α=18042=138    F2 = F12+ F22   2 F1 F2  cos β  F=F12+F222 F1 F2 cosβ=F12+F222 F1 F2 cos138° =302+3022 30 30 cos138° =302+3022 30 30 (0.743145)=56.015=56.0148 N

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