Answered: You measure your weight by stepping on…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter2: Newton's Laws

Section: Chapter Questions

Problem 11P: . A person stands on a scale inside an elevator at rest (Figure 2.54). The scale reads 800 N. (a)...

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You measure your weight by stepping on a spring scale inside an elevator. If the elevator accelerates either upward or downward, the spring scale gives a reading different from
your weight. a) Calculate how much a 70 kg person weighs a) if the elevator accelerates upward with a rate of +1.00 m/s2 b) if the elevator accelerates downward with a rate of
-1.00 m/s2

Expert Solution

Step 1

Write the given values with suitable variables.

$\begin{array}{rcl} m & = & 70 kg \\ a_{u} & = & + 1 m / s^{2} \\ a_{l} & = & - 1 m / s^{2} \end{array}$

Here, m denotes the mass, $a_{u}$ denotes the upwards acceleration, and $a_{l}$ denotes the downward acceleration.

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