The three spheres shown are connected by a-spring, with spring constant k = 1000

Question

The three spheres shown are connected by a-spring, with spring constant k = 1000 N/m that is initially compressed 10 cm, and two flexible cords. If the spheres lie in the plane of a frictionless table and a 10-N force is applied in the direction shown, determine the resulting acceleration of the system's center of mass G. You may assume that the spring and cords are massless. Note, not all given information is needed. A car is traveling at a constant speed around a curve of radius rho. The track of the car is b and the height of its center of mass G from the ground is h.

Explanation / Answer

I am allowed to answer only 1 question at a time
if we consider all 3 blocks and spring as system.
Fext = 10 i N
mnet = (4+2+1) Kg = 7 Kg
aG = Fext/mnet
       = (10/7) i m/s^2
Answer: b

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