1. The problem statement, all variables and given/known data A scientist in a special elevator in a research facility on Earth, where g = 9.8m/s^2 [down], is standing on a bathroom scale, calibrated in newtons. The elevator can be given various vertical accelerations. The scientist weighs himself and finds that his weight has apparently doubled. What is the acceleration of the elevator? 2. Relevant equations Fg = mg Fnet = Fn + Fg F = ma W= mg 3. The attempt at a solution Apparent Weight g= 9.8/ms^2 W = -Fn W= -m(a-g) W= m(g-a)/m(g) -W/m(g) = a True weight Fg = mg Fg = m(9.81m^s^2) Horziontal Fnet = 0 Vertical Fnet = Fn + Fg ma = Fn + Fg Fn = ma - Fg But we still have three unknown variables. We don't know his true weight or his apparent weight; so I don't know how I can even begin to solve for the acceleration. I know in Physics I'm not supposed to rely on the examples in the text as I'm supposed to be learning about the concepts but in any question similar I've been given the mass + acceleration and in some cases gravity when it isn't 9.81 m/s^2.