Resultant force

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Resultant force

Post by MathsTutor4You on Mon Sep 07, 2015 5:07 pm


Two forces P and Q act on a particle at O. The angle between the lines of action of
P and Q is 120° as shown in Figure 4. The force P has magnitude 20 N and the force has magnitude X newtons. The resultant of P and Q is the force R.

Given that the magnitude of R is 3X newtons, find, giving your answers to 3 significant
figures

(a) the value of X,

(b) the magnitude of (P – Q).
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