Three charged objects are located at the 'corners' of an equilateral triangle with sides $1\mathrm{.}0m$ long. Two of the objects carry a charge of $5\mathrm{.}0C$ each. The third object carries a charge of $-5\mathrm{.}0C.$ What is the resultant force acting on the $-5\mathrm{.}0C$ object? Assume all three objects are very small.