(Solved): 3. A 45Kg person stands on a scale in an elevator as shown in the figure below. The scale reads in ...

3. A $45\mathrm{Kg}$ person stands on a scale in an elevator as shown in the figure below. The scale reads in Newtons. Take up to be the +y direction. a) If the elevator is moving upward at a constant speed of $3\mathrm{m}/\mathrm{s}$, what is the reading on the scale? b) If the elevator accelerates downward at $3.5\mathrm{m}/{\mathrm{s}}^2$, what is the reading on the scale. c) Determine the acceleration of the system if the reading on the scale is $598.5\mathrm{N}$. d) What does the scale read if the cable holding the elevator breaks?