someone please help me out with this question: You are in an elelvator that is able to travel up and down a mineshaft. a load is hung from the ceiling inside the elevator on a massless string. You find that the tension in the rope is 10% less than that of the weight force of the load. what can be said about the elevator?; 1./ it's an inertial reference frame 2./it's a non-inertial refernce frame 3./it's moving up at a constant velocity 4./moving down with a constant velocty 5./must be accelerating I'm thinking 2./ and 5./ but definitely not sure. Could someone walk me through reference frames in this context and help me understand what is going on?