Chapter 4.5, Problem 4.14SC

Interpretation Introduction

Interpretation:

The given assumption has to be validated. The actual number of books that can be lifted using the given energy has to be compared with and without assumption.

Concept Introduction:

The equation for energy is given below,

  $\text{E = m g h}$

Where,

  $\begin{array}{l}\text{E = energy}\\ \text{m = mass}\\ \text{g = acceleration due to gravity }\\ \text{h = height}\end{array}$

The unit of Joule can also be written as ${\text{kg m}}^{\text{2}}{\text{/s}}^{\text{2}}.$

  $\text{Number of books = }\frac{\text{Total energy available}}{\text{Energy required to lift 1 book}}$