3 forces act on an object. If the object is in translational equilibrium, which of the following must be true? 1. the vector sum of the forces =0 2. the magnitude of the 3 forces must be equal 3. the 3 forces must be parallel would the answer be just 1? I don't think 2 is true because the forces can be unequal but the net force needs to be = 0. And I don't know how what's stated in choice 3 must necessarily contribute to translational equilibirum. Thanks for any imput.