Shown in the figure is a system of three particles connected by two springs. The accelerations of A, B and C at any instant are 1 m//sec^(2), 2 m//sec^(2) and 1//2 m//sec^(2) respectively directed as shown in the figure. External force acting on the system is :

Shown in the figure is a system of three particles connected by two sp

1.	Shown in the figure is a system of three particles connected by two springs. The accelerations of A, B and C at any instant are 1 m//sec^(2), 2 m//sec^(2) and 1//2 m//sec^(2) respectively directed as shown in the figure. External force acting on the system is :
Answer» 1 N 7 N 3 N None of these ANSWER :C

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Shown in the figure is a system of three particles connected by two springs. The accelerations of A, B and C at any instant are 1 m//sec^(2), 2 m//sec^(2) and 1//2 m//sec^(2) respectively directed as shown in the figure. External force acting on the system is :

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