jakehazley
33

# You are standing on a scale inside an elevator. The scale reads 13 less than your weight. What is the acceleration of the elevator?

Well, you must know your own mass. Assuming that, you get $G = m ( g + a) \\ G' = m g \\ G - G' = 13 \\ m ( g + a - g ) = 13 \\ a = \frac{13}{m}$ So, the acceleration is 13 divided by your own mass.