Chapter 3, Problem 1IP

Summary Introduction

To find: The mass of the person WP.

Answer to Problem 1IP

The mass of the person WP is $138\text{kg}$.

Explanation of Solution

Calculation:

Write an expression to find the mass.

$m=\frac{W}{g}$

Here, m is the mass of the person, W is the weight of the person, and g is acceleration due to gravity.

Substitute 1352 N for W and $9.8\text{m}/{\text{s}}^{\text{2}}$ for g to find the mass of the person.

$\begin{array}{c}m=\frac{1352\text{N}}{9.8\text{m}/{\text{s}}^{\text{2}}}\\ =\frac{1352\text{N}\left(\frac{\text{kg}\text{m}/{\text{s}}^{\text{2}}}{1\text{N}}\right)}{9.8\text{m}/{\text{s}}^{\text{2}}}\\ =137.9592\text{kg}\\ \approx 138\text{kg}\end{array}$

Conclusion

Therefore, the mass of the person is $138\text{kg}$.