.Two charged objects feel an electrostatic force of 8N pulling them together when they are a distance of 2m apart. decreased to 1m what will the answer

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?