Three particles having a total mass of 6 kg are subjected to three forces,as shown in the figure.The magnitude of one force is presented to furnish the scale factor for the others.What is the acceleration of the center of mass of the system? 
A) It is knowable only if the mass of each particle is given.
B) 6.6 m/s2
C) zero
D) -2 m/s2 
E) -2 m/s2 
Correct Answer:
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